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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The young man admitted (to make) errors (in judgment) (on) more than one (occasion).
A．to make
B．in judgment
C．on
D．occasion
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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