—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—Oh, dear! She _______ a lot of difficulties!
#89683
A
may go through
B
might go through
C
ought to have gone through
D
must have gone through
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The workers in the factory demanded that their pay   by 20 percent.
#87643
A
be raised
B
would be raised
C
should arise
D
should be risen
---You _________to our Mom like that. It was awfully impolite. ---You are right. I must have been crazy at that moment.
#87529
A
mustn’t have talked
B
needn’t have talked
C
shouldn’t have talked
D
may not have talked
If he         my advice, he wouldn't have lost his job.
#86856
A
followed
B
should follow
C
had followed
D
would follow