问题

It is only with the help of scientific research _____ bring PM1 air pollution under control.

A:that we will
B:we will
C:that we do
D:do we;

正确答案是：

同类题型

If Wu Dajing _____ the record in 2018 Winter Olympics. he would not be world famous now.

Lily had a bad stomachache. But the doctor saidthere was ____________with her.

How careless you are! You_______ more careful next time.

Can I ask you__ questions –Sure.

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