一I heard that you got an A in the chemistry exam．Well done!一Thanks，I know that you a good job as well．
#87426
A
shouId have done
B
need have done
C
must have done
D
could have done
推荐题目
By the time you come back, your aunt ______ for Nanjing to attend a meeting.
#87512
A
will leave
B
leaves
C
left
D
will have left
—Sorry indeed. I______ to your birthday party if …—Forget it. I know you were out on business.
#87479
A
must come
B
would come
C
must have come
D
would have come
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
Doctors say that exercise is important for health, but it _______ be regular exercise.
#87072
A
can
B
will
C
must
D
may