单项选择题

When he was in his ______, he began to study English.()

A. forty
B. forty's
C. forties
D. forty's years old

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In no way ______ from practice.()

A. theory can be separated
B. theory is separated
C. can theory be separated
D. has theory been separated
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Anyone can get into the club, ______ he is a member there.()

A. even if
B. unless
C. as that
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