单项选择题

A man has to make ______ for his old age by putting aside enough money to live on when old.

A．supply
B．assurance
C．provision
D．adjustment
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单项选择题
Why does a vegetarian restaurant make its dishes resemble meat in every way except ______
A．ingredients
B．elements
C．components
D．compounds
单项选择题
Only by listening, speaking, reading and writing ______.
A．can English be mastered
B．can we master English
C．English can be mastered
D．we can master English
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