A. whileB. untilC. whenD. before— I wonder how much you……

单项选择题But for their help, we（） the program in time.

A. can not finish
B. will not finish
C. had not finished
D. could not have finished

单项选择题— Why don't we choose that road to save time — The bridge to it（）.

A. has repaired


B. is repaired
C. is being repaired

D. will be repaired

单项选择题— May I open the window to let in some fresh air —（）!

A. Come on
B. Take care
C. Go ahead
D. Hold on

单项选择题What I need is （）book that contains （）ABC of oil painting.

A. a; 不填
B. the; 不填
C. the; an
D. a; the