单项选择题

— I wonder how much you charge for your services.
— The first two are free （）the third costs $30.

A. while
B. until
C. when
D. before

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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
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