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【单选题】
在题21图中,正确的齿轮啮合画法是A.
B.
C.
D.
D
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A.
at
B.
in
C.
on
D.
to
【单选题】He ________ very busy this week, he ________ free next week.
A.
will be; is
B.
is; is
C.
will be; will be
D.
is; will be
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【简答题】He ________ very busy this week, he ________ free next week.A. will be; is B. is; is C. will be; will be D. is; will be
【单选题】If he ______, Jack will go to fly a kite next Sunday. [ ]
A.
will free
B.
will be free
C.
is going to be free
D.
is free
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