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
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This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.
#90493
A
would
B
should
C
could
D
might
—I saw your uncle take a taxi to the airport．Why didn’t you drive him there?—I ,but my car ．
#86892
A
would; was fixed
B
would have; was fixed
C
would have; was being fixed
D
did; was being fixed
He ________ get into his own house because he has lost his keys.
#88359
A
mustn’t
B
doesn’t have to
C
can’t
D
needn’t