---Mr. Smith must know a lot about Chinese history.   ---________. He has studied it for years.
#82535
A
So he does
B
So does he
C
So he must
D
Yes, he must
推荐题目
Not until Jane got off the bus_______her wallet missing.
#84154
A
did she find
B
she found
C
didn’t she find
D
she didn’t find
_____ the poem a second time, the meaning will become clearer to you. 
#83121
A
Our having read
B
When you read
C
While reading 
D
If reading
 ______ today, he would get to Germany by Friday.            
#82620
A
Was he leaving
B
Were he to leave
C
Would he leave
D
If he leaves