But for their common interests, they_____ cooperated so smoothly in the investigation of the case.
#86893
A
could have
B
will not have
C
could not have
D
have not
推荐题目
______ it be true that we will have to wait for 3 hours in a line to get into the French Pavilion in the Expo Site?
#87876
A
Must
B
Shall
C
Can
D
Need
Look! If we had begun to do the work yesterday morning, we _____ ourselves just like them．
#87201
A
would have enjoyed
B
were to enjoy
C
should enjoy
D
would be enjoying
--- Who ______ it be that is singing in the next room?--- It _______ be Lucy, but I am not sure.
#86933
A
can ; may
B
may ; can
C
can; must
D
must; may
I would have come to see you earlier, but I __________ too busy.
#90384
A
had been
B
were
C
was
D
would be
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