--- ______ you give your seat to this old man? --- Of course. 
#78168
A
Can
B
Shall
C
Need
D
Must
推荐题目
 - Can your uncle speak English? -_______. But he can speak Chinese.
#75024
A
Yes, he can.
B
Yes, he can't.
C
No, he. can't.
D
No, he can.
We were looking for you all this morning. You    office without a word.
#62458
A
mustn’t have left
B
shouldn’t have left
C
couldn’t have left
D
needn’t have left