You will achieve nothing ______ you work hard in a proper way.

ult _____ in practice, this new technique hasn’tbeen applied

_________ do you like ping-pong — Because it is relaxing.

Could you tell me what time the train leaves Hefeifor Beijing—I’m afraid you need to ______on the Internet.

It is reported that America offered to help us build aircraft carriers. — But many citizens would rather our country __________ one by ourselves.