— The woman biologist stayed in Africa studying wild animals for 13 years before she returned. — Oh, dear ! She ______ a lot of difficulties !
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A
may go through
B
might go through
C
ought to have gone through
D
must have gone through
推荐题目
Mr Bush is on time for everything. How____ it be that he was late for the opening ceremony?.
#87653
A
can
B
should
C
may
D
must
At a construction site in our city the workers have uncovered an ancient wall that_______ to keep the enemy out of the city, but it requires further evidence.
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A
might have functioned
B
would have functioned
C
must have functioned
D
should have functioned
Teachers required that all the students ___ their homework all alone.
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A
must finish
B
would finish
C
had to finish
D
finish
They urged that measures _______ immediately to protect the endangered animals.
#87884
A
should take
B
must be taken
C
would take
D
be taken
The fire spread through the hotel very quickly, but everyone __________ get out.
#89474
A
had to
B
would
C
could
D
was able to