问题

ists are tryingto develop a special material, ________ they will make use of in spacecraft.

A:it
B:one
C:that
D:what

正确答案是：

同类题型

asked him to _____ me a few minutes so that we could go over all the problem.

I am ashamed, sir, that I wasted the many hours __________ I should have studied in class

All over the world, people die of ________ every day.

May I speak to Robert— .

_____ name’s Linda.