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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单项选择题
In no way ______from practice.
A．theory can be separated
B．theory is separated
C．can theory be separated
D．has theory been separated
单项选择题
To travel from England to Scotland you ______a passport.
A．mustn’t have
B．haven’t got
C．don’t need
D．needn’t
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