If we ___________some measures, we might have prevented the environmental pollution．
#87466
A
take
B
had taken
C
took
D
have taken
推荐题目
They urged that the library ______ open during the vacation.
#86800
A
must be kept
B
is kept
C
would be kept
D
be kept
I told your friend how to get to the hotel, but perhaps I______have driven her here.
#87301
A
could
B
should
C
must
D
might
We the manager , but no one the telephone number .
#87851
A
could have called ; knew
B
could have called ; had known
C
could call ; had known
D
could call ; knew
If it hadn’t rained so hard last night，it_______ so cold today.
#86461
A
would’t be
B
hadn’t been
C
weren’t
D
wouldn’t have been
— I don’t mind telling you what I know. — You _____. I’m not asking you for it.
#89260
A
mustn’t
B
may not
C
can’t
D
needn’t