—— I can’t get through to the general manager’s office anyhow. —— The line is busy. Someone_____the telephone. 
#89932
A
must use
B
uses
C
must have been using
D
must be using
推荐题目
You didn’t let me drive. If we ____ in turn, you ____ so tired.
#87376
A
drove…didn’t get
B
had driven…wouldn’t have got
C
drove…wouldn’t get
D
were driving…wouldn’t get
If my lawyer ______ here last Friday, he _____ me from telling the truth.
#87567
A
had been; would have prevented
B
had been; would prevent
C
were; would prevent
D
were; would have prevented
 If you ________ home without a word, your parents wouldn't be so worried now.
#86490
A
didn't leave
B
couldn't have left
C
hadn't left
D
shouldn't leave