According to a recent survey，______three fifths of working mothers in china don't want to have a second child．（ ）
| A． |
mostly |
B． |
especially |
C． |
partly |
D． |
nearly |
Look at the man standing at the school gate． Is he your math teacher Mr． Brown？
No． it ____ be him． He has gone to Chengdu on business．（ ）
| A． |
needn't |
B． |
can't |
C． |
may not |
D． |
mustn't |
Have you ever read the traditional story Yu Gong moves a Mountain？
Yes． our teacher often advises us ____ more meaningful traditional books．（ ）
| A． |
reading |
B． |
reads |
C． |
read |
D． |
to read |
Could you please tell me ____ ？
Sorry ， I don't know．You may ask Mr． Black over there．（ ）
| A． |
who does the robot belong to |
| B． |
who the robot belongs to |
| C． |
who did the robot belong to |
| D． |
who the robot belonged to |
What a terrible rainstorm it was last night!
Yes， many old trees and houses ____．（ ）
| A． |
pull down |
B． |
were pulling down |
| C． |
were pulled down |
D． |
pulled down |
Do you think it is popular to ____ red envelops（红包） on WeChat during festivals？
Yes． But I prefer giving gifts to family members．（ ）
| A． |
give out |
B． |
give away |
C． |
give back |
D． |
give up |