— The woman biologist stayed in Africa studying wild animals for 13 years before she returned. — Oh, dear ! She ______ a lot of difficulties !
#90563
A
may go through
B
might go through
C
ought to have gone through
D
must have gone through
推荐题目
We ______ the difficulty together, but why didn’t you tell me?
#87353
A
should face
B
might face
C
could have faced
D
must have faced
It is strongly suggested that measures students to cheat in the exams.
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A
be taken to prevent
B
be taken to forbid
C
are taken to prevent
D
are taken to forbid
Being examined twice a year is the rule that every driver obey in the city．
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A
shall
B
can
C
ought to
D
need
One of the requirements for the experiment is that the material _____ to its burning temperature．
#86983
A
is heated
B
will be heated
C
be heated
D
would be heated