When did China __ the first man-made satellite to circle the earth, do you know?

We should give the disabled encouragementto live _________ as we do.

People have the belief _______ factories should produce fewer things from raw materials, _______ the supply is growing smaller and smaller.

There are floors in the building and Mr. Wang lives on the floor.

erson has not had enough sleep,hisactions will give him ___ during the day