I"m not sure _____ my uncle will come tomorrow. [ ]A. weatherB. wheth

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I"m not sure _____ my uncle will come tomorrow. [ ]
A. weather
B. whether
C. that
D. what

答案

举一反三

_____ we know, food gives us energy. [ ]
A. Of
B. For
C. Like
D. As

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—What were you doing _____ I phoned you yesterday?
—I was watering flowers in the garden. [ ]
A. after
B. before
C. when
D. and

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I am quite busy. I don"t know _____ I will have time or not tonight.[ ]
A. if
B. weather
C. whether
D. when

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She likes music _____ it"s fun.     [     ]
A. why
B. because
C. what
D. when

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Some students think English is very difficult _____ it"s very interesting,      [     ]
A. then
B. or
C. and
D. but

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