anyone call, tell them I’m in conference.
#86721
A
Should
B
Would
C
Could
D
Might
推荐题目
Oh, Janne, you’ve broken another glass. You ought ____when you washed it. 
#89876
A
be careful
B
to care
C
have cared
D
to have been careful
Jack _____ yet, otherwise he would have telephoned me.
#89350
A
mustn’t have arrived
B
shouldn’t have arrived
C
can’t have arrived
D
needn’t have arrived