Practisig Chinese kung fu can not only ________ one’s strength, but also develop one’s character.

I can _____ some noise while I’m studying, but I can’t stand very loud noise.

mpany used 50 percent of the raw materials, therest of which __________ sent to other cities to help the factories there.

His words puzzled me so much that I had a hard time trying to ______ what he really meant.

.What you told me is really true,____?