It"s clear it"s going rain. [ ]A. that B. which

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It"s clear         it"s going rain.              [     ]
A. that
B. which
C. when
D. what

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举一反三

My brother and I look different            we are twins.            [     ]
A. though
B. because
C. but
D. then

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I arrived at the airport _     _ the plane had taken off.           [     ]
A. while
B. before
C. after

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Can you tell me ________ there is a library in your school?         [     ]
A. if
B. that
C. when

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The headmaster said the school Art Festival will be put off           the bad weather.        [     ]
A. became
B. to
C. because of
D. at

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I like art ______ it"s fun. [ ]
A. why
B. what
C. how
D. because

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