---- I can’t get through to the general manager’s office anyhow. ---- The line is busy. Someone ___________ the telephone.
#87229
A
can have used
B
can use
C
must have used
D
must be using
推荐题目
_______ he was seriously ill, I wouldn’t have told him the truth.  
#87834
A
If I knew
B
If I know
C
Had I known
D
Did I know
—The wind is always blowing here.—How I wish it ______ today
#86927
A
won't blow
B
didn't blow
C
doesn't blow
D
isn't blowing
The officer demanded that such things ______from happening again.
#86715
A
prevented
B
prevent
C
be prevented
D
were prevented