—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
推荐题目
I think that's unlikely to happen, but if that_______, both America's and China's interest would be severely damaged.
#86812
A
should occur
B
occurs
C
had occurred
D
is going to occur
It was ordered that all the soldiers ____ to the front．
#87922
A
should send
B
must be sent
C
be sent
D
must go
It’s required that mineral resources_______ hand in hand with the local environment protection.
#87634
A
be exploited
B
exploit
C
have exploited
D
exploited
一What does the sign over there read?一“No person ______ smoke or carry a lighted cigarette, cigar or pipe in this area.”
#88123
A
shall
B
may
C
will
D
must
-- It’s many years since I saw you last； I _____ you at all.--- I wouldn’t have, either, if someone ______ you by the name.
#87150
A
didn’t recognize; hadn’t called
B
didn’t recognize; didn’t call
C
haven’t recognized; didn’t call
D
recognized; had called