单项选择题

Criticism and self-criticism is necessary ______ it helps us to find and correct our mistakes.

A．by that
B．at that
C．on that
D．in that
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单项选择题
I'd rather you ______ make any comment on the issue for the time being.
A．don't
B．wouldn't
C．didn't
D．shouldn't
单项选择题
Housewives who do not go out to work often feel they are not working to their flail ______.
A．capacity
B．strength
C．length
D．possibility
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