单项选择题

She had to be very ______ to feed such a large family, especially when her husband was out of work.

A．economic
B．economical
C．careful
D．efficient
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单项选择题
Have you met Bill's brothers I've met one. I didn't know he had______.
A．other
B．the other
C．ones
D．another
单项选择题
When he became rich, he ______ his former friends.
A．broke with
B．broke down
C．broke away from
D．broke off
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