1 C
2 B
3 A
4 C
5 A
26 The girl who is talking to the teacher over there is my close friend
27 If I had enough, I could buy this book
28 Although he is very tired, he has to finish his homework
29 They didn't use electricity economicallt, they wouldn't have had to pay a large bill
30 I suggest putting garbage bins aroung the school yard to prevent lazy students from littering
21.C 22B 23A 24B 25A
26. The girl who is talking to the teacher over there is my close friend.
27. If I had enough money, I could buy this book.
28. Although he is very tired, he has to finish his homework.
29. They didn't use electricity economically, so they had to pay a large bill.
30. I suggest putting garbage bins around the school yard to prevent lazy students from littering.
