Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.
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A
achieved
B
has achieved
C
will achieve
D
had achieved
推荐题目
I ____ go to bed ____ the telephone rang.
#103278
A
was about to, when
B
was going to, while
C
would, when
D
was to, while
A1l flights _________ because of the heavy storm, so we decided to take the train.
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A
have canceled
B
have been canceled
C
had canceled
D
had been canceled
Although there are no classes in the afternoon now, no student ______ go out of school without the head teacher’s permission.
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A
will
B
must
C
may
D
shall
It ______ that Tokyo will be the host city for the 2020 Summer Olympic Games.
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A
will report
B
will be reported
C
has reported
D
has been reported
Fruit and vegetables in areas_________ there is enough water.
#102471
A
grows; that
B
are grow; where
C
growing; that
D
are grown; where