单项选择题

The new invention is to make our daily life easier, () it more difficult.

A. not to make
B. not make
C. not making
D. do not make

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I don’t mind () out for a walk in such bad weather.

A. go
B. to go
C. going
D. gone

单项选择题

We plan to increase the output of the machine ()7.4 percent this year.

A. at
B. in
C. by
D. with

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