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
We had to ______ a lot of noise when the children were at home.
A．go in for
B．hold on to
C．put up with
D．keep pace with
单项选择题
Excuse me. If your call' s not too urgent, do you mind ______ mine first
A．I make
B．if I make
C．me to make
D．that I make
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