You should understand the traffic rule by now. You’ve had it ________ often enough.
#101797
A
explaining
B
to explain
C
explain
D
explained
推荐题目
A local radio station said that several eruptions _____ in the past twenty years.
#101916
A
had been taken place
B
took place
C
have taken place
D
had taken place
By the time he arrived in Beijing, we _______ there for two days.
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A
will have stayed
B
stay
C
have been staying
D
had stayed
The project alongside with the experiment we had once devoted so much time ______ perfectly.
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A
to work out
B
to working out
C
to worked out
D
has worked out