He was riding to school _____ he saw the accident this morning. [ ]A. when

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He was riding to school _____ he saw the accident this morning. [     ]
A. when
B. while
C. as
D. so

答案

举一反三

— What is our head teacher like,do you know?
— Oh,he is very kind  _____ he looks very serious.[     ]
A. because
B. though
C. if
D. when

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I like after-school activities they are fun .[ ]
A. but
B. or
C. because
D. so

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Don"t go to bed ______ I come home.        [     ]
A. until
B. after
C. when
D. then

题型：期末题难度：| 查看答案

You need to listen to English songs______you can improve your listening skills .         [     ]
A. so
B. that
C.so that

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I didn"t go there _____ the bad weather.[ ]
A. if
B. but
C. because
D. because of

题型：期末题难度：| 查看答案