No matter how bright a talker you are, there are times when it’s better _____ silent.
#94298
A
remain
B
be remaining
C
having remained
D
to remain
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________ for several weeks,the city needed food.
#89121
A
As having flooded
B
Being flooded
C
Having been flooded
D
To flood
The class __________ 80 students is hard to manage.
#93034
A
making up of
B
consists of
C
consisting of
D
made up
Time ____ never comes again. So we’d better make full use of our time. 
#96385
A
losing
B
lost
C
being lost
D
having lost