But for their help, we ______ the program in time.
#87442
A
can not finish
B
will not finish
C
had not finished
D
could not have finished
推荐题目
What would have happened____, as far as the river bank? 
#89939
A
if Bob has walked farther
B
if Bob should walk farther
C
had Bob walked farther
D
if Bob walked farther
— No wonder you caught a cold. You _____ out last night without a coat. — I know how silly I was. 
#87891
A
shouldn’t have gone
B
mustn’t have gone
C
couldn’t have gone
D
mightn’t have gone