---- 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
If only I＿＿＿＿＿how to operate a computer as you do!
#89926
A
had known
B
wou欤?know
C
should know
D
knew
—Why didn’t you turn up last night, Huck? —I ____ to go for a walk, but someone called and I couldn’t get away.
#86784
A
was planning
B
planned
C
had planned
D
would plan
---May I take this book out of the reading room?---No, you______. You read it in here.
#86945
A
mightn’t
B
won’t
C
needn’t
D
mustn’t
When he saw all his books _____ here and there on the floor, he knew that something terrible _____.
#88903
A
lying; must have happened
B
lie; must happen
C
lay; might have happened
D
had lain; could have happen