Giup minh giai bai toan nay nhe

Cho hinh tam giac ABC co goc vuong AB=30cm,AC=45cm,M la mot diem nam tren canh AB sao cho AM =20cm.

Tu M ke duong thang song song voi canh AB, cat AC tai N. Tinh dien tich hinh tam giac AMN

        Fill in the correct word:

1)Are you........of dogs?

2)I feel........about concealing this information.

3)We are all........in good results in maths.

4)Helen is........at English.

5)I'm........with my dog,it has torn my slippers.

6)She was........by his impoliteness.

7)Maggie is.........with grammar books.

8)Tom is........of watching hockey matches.

9)Are you........of your duties at home?

10)We are ........up with this awful rainy weather.

11)Why are........for school again?

12)Ben is........on playing volley-ball.

13)Mona is........about her maths exam.

14)I'm........of doing it myself.

15)Nick is........of his sister,she is a champion.

16)We were........about our trip to London.

17)I was........of doing it myself in that situation.

18)What are you........for in your classroom?

19)We were........by the road accident.

20)She is........of working too hard.

21)Bill was........with this unpleasant information.

(interested ;afraid ;good ;guilty ;bored ;angry ;aware ;surprised ;fond ;keen ;fed ;capable ;late ;anxious ;ashamed ;proud ;excited;shocked ;responsible ;annoyed ;tired.)