摘要： Study hard, you are sure to have a good result in the exam.

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Study hard, ________ you are sure to have a good result in the exam.

A.
or
B.
and
C.
for
D.
but

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Study hard, _____ you are sure to have a good result in the exam.

[ ]

A. or
B. but
C. for
D. and

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Study hard, ________ you are sure to have a good result in the exam．

A．or

B．and

C．for

D．but

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Study hard, ________ you are sure to have a good result in the exam.

[　　]

A．or

B．and

C．for

D．but

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Study hard，_________ you are sure to have a good result in the exam!

A．but B．and C．for D．or

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