单项选择题

While (remembering) mainly (for) the invention of the telephone, Alexander Graham Bell devoted his life (to) (helping the deaf).

A．remembering
B．for
C．to
D．helping the deaf
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单项选择题
The reason (that) (many of homemakers) buy kitchen appliances (厨房用品 ) is (that) they want to do their tasks (in a shorter length of time).
A．that
B．many of homemakers
C．that
D．in a shorter length of time
单项选择题
He said softly that he (would rather) stay (at home) than (going out) (for) a walk.
A．would rather
B．at home
C．going out
D．for
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