What should we pay attention to ________mistakes during the exams？
Some details．（ ）
| A． |
avoiding making |
| B． |
avoid to make |
| C． |
to avoid making |
﹣Do you know Shanghai is one of ______ in the world？
﹣Yes，it's bigger than ______ city in China．（ ）
| A． |
the biggest city；any |
| B． |
the biggest cities；any |
| C． |
the biggest cities；any other |
﹣I saw your mother in the library just now．
﹣It ______ be her．She went to Beijing yesterday．（ ）
| A． |
can't |
B． |
mustn't |
C． |
needn't |
About ______ of the land ______ covered with trees and grass．（ ）
| A． |
three fifths； is |
B． |
three fifths； are |
C． |
three fifth； are |
Whenever Tom reads an interesting novel，he can't keep it to ______ and wants to share it with his classmates．（ ）
| A． |
him |
B． |
he |
C． |
himself |
﹣How far is your home from school？﹣About ______ walk．（ ）
| A． |
five minute's |
B． |
five minutes' |
C． |
five minutes |