36. If you enjoy camping, you 'll need this to sleep in t_ _ _

37. People learn to play music on this. g _ _ _ _ _

38. If you like reading stories about pop stars, you may

need to buy these every week. m _ _ _ _ _ _ _ _

39. People who like walking in the forest need these to

keep their feet dry. b _ _ _ _

40. If you enjoy watching films at home, you may need

to rent this. v _ _ _ _

1.this place has many books for you to read, but you cannot keep them. l_ _ _ _ _ _

2.you read this to find out what is happening in the world. n_ _ _ _ _ _ _ _

3.you may need to write this if you answer the phone for another person. m_ _ _ _ _ _

4. the teacher writes on this and everyone in the class can see it. b_ _ _ _

5. if you go on holiday, you may write this and send it to a friend. p_ _ _ _ _ _ _

Tìm GTNN của các biểu thức:

A = | x + 1| + | 2x - 2| + | x - 3|

B = 2( x - 2)^2 + ( 3y - 1)^4 - 5

Nêu những tấm guơng tiêu biểu qua các cuộc kháng chiến và công lao đóng góp của những vị anh hùng đó ( lớp 7 nha)