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1.do => did 6 cut => cut 11 buy => bought 16 think => thought
2.teach => taught 7 put => put 12 have => had 17 see => saw
3 send => sent 8 give => gave 13 take => took 18 eat => ate
4 spend => spent 9 write => wrote 14 go => went 19 sing => sang
5 begin => began 10 be => was/were 15 make => made 20 wear => wore
doing
watching
taking
geting
singing
running
telling
studying
catching
returning
waiting
travelling
watering
turning
driving
putting
liing
listening
having
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26=351
Số số hạng của dãy số là:
(26-1):1+1=26 (số)
Tổng của dãy số là:
(26+1)*26:2=351
Đáp số 351
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22 + 23 + 24 + 25 + 26 + 27
=(1 + 19) + (2 +18) + (3 + 27) + (4 + 26) + (5 + 25) + (6 + 24) + (7 + 23) + (8 + 22) + (9 + 21) + (10 + 20) + (11 +19) + (12 + 18) + (13 + 17) + (14 + 16)
=20 + 20 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 15
=40 + 330 + 15
=381
1. stayed
2. visited
3. got
4. wrote
5. took
6. ate
7. had
8. did
9. played
10. drank
11. saw
12. gave
13. returned
14. remembered
15. thought
16. could
17. read
18. told
19. talked
20. walked
21. went
22. received
23. teached
24. stopped
25. made
26. bought
27. been
28. moved
29. cried
30. sat
Mình chỉ làm lụi thôi , không biết đúng hay không ???
dung roi do thanks