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— _______ does Tom like math? —Because _____ fun.
#55776
A
Why, it’s
B
When, it
C
Why, It’s
D
When, it
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All of us find ________ necessary to take exercise every day.
#55752
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this
B
that.
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them.
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it
 —Is your name Fang Fang?—           .
#55885
A
Yes，it is
B
No，I’m not
C
Yes，I am
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I found ____ hard to get out of bed on cold winter mornings.
#55771
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that
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it is
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Scientists are working hard to make _______ possible for people to live on Mars in the future.
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it
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this
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---Dear me! What a beautiful computer!---My grandma bought ___for my sister and me. It’s ours.
#55779
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them
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it
C
a
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one