If human beings had been a bit less greedy and cruel, more birds and animals _____dying out.
#89442
A
ought to avoid
B
could have been avoided
C
should have avoided
D
might have avoided
推荐题目
—What happened to the young trees we planted last week?—The trees ____ well, but I didn’t water them.
#87377
A
might grow
B
needn’t have grown
C
would have grown
D
would grow
—What are you doing, John? Why stop?—To be on the safe side, we’d fill up the car now for we _______ run out of gas on the way．
#88350
A
must
B
will
C
might
D
should
Premier Wen advocated school bus safety_______.
#87525
A
be guaranteed
B
guaranteeing
C
should guarantee
D
must be guaranteed
You would have helped your mother do some housework. But you_______.
#89185
A
don’t
B
didn’t
C
wouldn’t
D
weren’t
—Why didn’t you turn up last night, Huck? —I ____ to go for a walk, but someone called and I couldn’t get away.
#86784
A
was planning
B
planned
C
had planned
D
would plan