问题

____ regular exercise is very important, it’s never a good idea to exercise too close to bedtime.

A:on
B:for
C:with
D:at;

正确答案是：

同类题型

You had better________ wine because you have to drive back home.

The girl looked at me with a ____expression. Maybe the problem was quite ______.

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Excuse me, Mum. When can we have dinner—Not until it in half an hour.

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