16.Kindness is the most important ______ a man can have.
A.habit
B.property
C.quality
D.effect
17.John’s score on the test is the highest in class;he ______ last night.
A.must have studied
B.had studied
C.must study
D.studied
18.______ to the speaker for five minutes,he got up and left.
A.Listened
B.To listen
C.Listening
D.Having listened
19.He was very busy yesterday;otherwise he ______ to the meeting.
A.had come
B.would come
C.could come
D.would have come
20.We are opposed to ______ without him.
A.have a party
B.we have a party
C.us have a party
D.having a party
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