That be Mary． She has gone to Changsha on business． （ ）
A．can'tB．mustC．may
Excuse me，how can I go to the city bookstore？
（ ）
| A． |
Yes，you can． |
| B． |
It's all right． |
| C． |
Turn left at the corner． |
| D． |
I don't think so． |
Would you please help me move this desk？
（ ）
| A． |
Of course not． |
B． |
Certainly． |
C． | |
| D． |
I agree with you． |
E． |
I am O |
F． |
I want to buy a new dress for my mother．（ ）
| A． |
What can I do for you？ |
| B． |
Where is your mother？ |
| C． |
What are you doing？ |
| D． |
How much is this？ |
I'm sorry for causing you so much trouble．
（ ）
A．You are kind．B．It is certain．
C．It doesn't matter．D．I am sorry，too．
Excuse me，what's the time now？
（ ）
| A． |
It's Friday． |
B． |
It's sunny． |
| C． |
It's October 1 st． |
D． |
It's half past ten． |