n

R=\(\dfrac{U}{I}\) (Ω)

Trong đó, + R: điện trở (Ω)

+ U: hiệu điện thế (V)

+ I: Cường độ dòng điện (A)

1. He often ………goes………. (go) to school on foot.

2. It ……is raining………….(rain) very hard now.

3. The sun ……warms…….(warm) the air and ……gives……….(give) us light.

4. Look! A man ………is running……….(run) after the train.

5. She ………goes……….(go) to school everyday.

6. Bad students never ……work………….(work) hard.

7. It often ………rains……….(rain) in the summer. It …is raining…….(rain) now.

8. The teacher always ………points……….(point) at the black – board when he ……wants………….(want) to explain something.

9. Mother ……is cooking………….(cook) some food in the kitchen at the moment, she always……cooks………….(cook) in the morning.

10. I always ……meet………….(meet) him on the corner of this street.

11. Where are you ……going…………..(go) now? – I ....am going….(go) to the theater.

12. He ………doesn't do……….(not do) morning exercises regularly.

13. Is he ………………doing………………….(do) morning exercises now?

14. Water ………boils……….(boil) at 100 degrees centigrade.

15. He ……is going to meet……….. (meet) the dentist next week.

16. Are you (be) a good student?

17. They …don't….. usually ……go……. (not go) to school by motorbike.

18. He ……is swimming……… (swim) over there now.

19. She ……will come………..(come) here next month.

20. They ……aren't………….. (not be) doctors.

21. He often ………gets……………… (get) up late.

22. Do you often …………watch…..………….(watch) TV?

23. Is Mr. Brown ………………listening………..……….. (listen) to music now?

24. I usually ………go………….. (go) shopping on weekend.

25. Hai often …………washes…………(wash) his face at 6.15.

26. Is she …………………playing…….…………………(play) badminton at the moment?

27. Thanh and Mai always ………see……………(see) a movie on Saturday.

28. Does he often ………………take……………………………(take) a bus to school?

29. We …………are…………(be) student in class 8A.

30. She ……doesn't…… often …………do…………(not do) homework in the evening.

31. He usually ………takes……………(take) a taxi to the airport.

32. They ……don't…. Usually …………go…………(not go) to school by bike.

33. Are they (be) beautiful?

34. Manh ……………isn't playing………(not play) soccer at the moment.

35. Minh ………is playing……………(play) chess with Nam at the moment.

36. They often ………visit……………(visit) their parents on Saturday.

37. Is she …………………studying………………….………………(study) now?

38. My and I always ………go……………(go) to the countryside.

39. He …………isn't…………(not be) at home now.

40. Hanh ………isn't reading……………(not read) book at the moment.

41. Our teacher usually …………gives…………(give) us many exercises.

42. He often …………catches…………(catch) a train to work.

43. The cat ………catches……………(catch) mouse.

44. They …………are planting…………(plant) trees over there at the moment.

45. My old friend, Manh ………writes……………(write) to me twice a month.

46. What she says ………is……………(be) true.

47. Where does she ……………buy….…………………(buy) her breakfast every morning?

48. Bien ……doesn't…….. often …………phone…………(not phone) to me.

49. Mrs. Green always …………takes…………(take) a bus to work. But now he …………is driving…………(drive) to work.

50. Look! The ball ………is falling……………(fall) down.

51. He usually …………waters…………(water) the trees in the morning.

52. She ……………isn't listening………(not listen) to the radio now.

53. The sun ……rises……(rise) in the East and ……sets……. (set) in the West.

54. He …………is playing…………(play) table tennis at the moment.

55. Mo and Nguyen …………are singing…………(sing) the same song now.

56. They are always ………making……………(make) noise in the class.

57. Hung ……doesn't……. often ………go……………(not go) camping in the summer.

58. Hanh ……………isn't reading………(not read) with the friends at the moment.

59. Does Son ……………write…………………(write) to their friends every summer holiday?

60. What are you ……………listening……..………..(listen) on the radio now?

61. Listen! Someone ………is crying……………(cry).

62. Kien and Tuyen ………are……………(be) good friends.

63. She …………will go…………(go) to work by bus tomorrow.

64. ……Are……..you ………going to see……………(see) the doctor next week.

65. Mai and Nam …………are going…………(go) to the movie theater tomorrow evening.

66. They ………are going to plant……………(plant) trees a long this street next month.

67. …Will………he …………write…………(write) to his friend next week.

68. They ……aren't……….(not be) doctor.

69. He often ………picks………(pick) his friend up at the rain way station morning.

70. She ………will watch………(watch) a romantic film on TV this evening.

71. Do you often …………do…………………(do) your homework in the evening?

72. I ……am reading…………(read) an interesting novel at the moment.

73. Do you usually ………………watch…………..………(watch) TV in the evening?

74. They always ………talk………(talk) to each other in the weekend.

75. They ………are playing………(play) soccer at the moment.

76. She ………doesn't……often ……go…………(not go) shopping on weekend.

77. They ………aren't………(not be) classmate.

78. Is he (be) your father?

79. Is she …………………listening…………….…………(listen) to music now?

80. Thanh and Hung ………are reading………(read) a wonderful story at the moment.

81. Mai and Hang ………aren't playing………(not play) the game at the moment.

82. I often ……wash…………(wash) my clothes.

83. She ………isn't………(not be) at home now.

84. Do you often ……………write………..……………(write) to your friend?

85. Mr. Mai ………waters………(water) the plant every morning.

86. We ……meet…………(meet) each other twice a month.

87. He ……is listening…………(listen) to the telephone at the moment.

88. They ……don't…….always ……go…………(not go) to the school by train.

89. He ………is drinking………(drink) beer at the bar at the moment.

90. They usually ……sing…………(sing) in the early morning.

91. Are My and Thanh ……………talking…..………………(talk) on the telephone now?

92. They ………plant………(plant) trees every early year.

93. He ……isn't playing…………(not study) Math at the moment.

94. Does she …………………play………………..……(play) badminton every afternoon?

95. They sometime …………do………(do) morning exercises at 5.30.

96. Thanh and I ………are…………(be) at home now.

97. Hung ………runs…………(run) about 5km every morning.

98. Do Hung and Minh sometime …………meet…….……………(meet) each other?

99. Every evening, she ………jogs…………(jog) about 3km.

100. He always ………drives…………(drive) his car to work. But now, he ……is riding……………(ride) his

a) (-385 + 210) + (385 - 217) 

= -385 + 210 + 385 - 217

= 210 - 217

= -7

b) (72 - 1 956) - (-1 956 + 28) 

= 72 - 1956 + 1956 - 28

= 72 - 28

= 44

a, Trần Quốc Toản: Chủ ngữ

tuổi nhỏ mà chí lớn: Vị ngữ

b, Đoàn tàu: Chủ ngữ

như con thoi ra Bắc vào Nam

c, Ở phía bờ đông bắc: trạng ngữ

mặt hồ: chủ ngữ

phẳng lặng như gương: vị ngữ