单项选择题


A．to
B．of
C．off
D．for
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单项选择题
A．followB．followedC．followingD．to follow
A．follow
B．followed
C．following
D．to follow
单项选择题
—De you know who invented______ telephone—No, but it is really______ telephone
A．the; the
B．/; the
C．the; /
D．the; a
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