As a policeman, It"s exciting _______ kind of dangerous.[ ]A. and B. but C.

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As a policeman, It"s exciting _______ kind of dangerous.[ ]
A. and
B. but
C. or
D. so

答案

举一反三

The kids enjoy eating junk food, ______ their parents don"t let them eat often. [ ]
A. so
B. or
C. and
D. but

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用 when或 while填空。1. I was looking out of the window _________ the teacher asked me.
2. What is he doing _________ his parents came back？
3. Mike was playing games _________ Jack was studying.
4. I was about to fall asleep _________ the baby began to cry.

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All the students were sweeping the floor __________ they heard a man __________. [ ]A. when；shouting
B. while；to shout
C. when；to shout
D. while；shouting

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I was reading the evening paper _____ the light went out.                                                                                                                                                        [     ]A. when
B. while
C. as
D. after

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Newton was playing under an apple tree ____ an apple fell onto his head.[ ]
A. when
B. while
C. after
D. before

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