An expert ___ to help them tomorrow, they are sure to work out the problem.
A. will come
B. coming
C. to come
D. having come
查看答案
The lecture ___ , a lively question-and-answer session started.
A. to be given
B. having given
C. being given
D. having been given
--- They sat still in the room, ___.- Why did they do like that?
A. drawing the curtains
B. with the curtains drawn
C. with the curtains drawing
D. having the curtains drawn
The sun ___ , they continued their way.
A. has risen
B. having risen
C. has raised
D. having raised
Here are two volumes, the third one ____ next month.
A. comes out
B. came out
C. coming out
D. to come out
微信支付 
支付宝支付