3. He played on the _____ for two hours and when he returned he found half his goods _____ stolen.

.Of the two best-sellers，which do you think is________tome

Noise is unpleasant, _____ when you are trying to sleep

Practising Chinese Kung fu can not only _____ one’sstrength, but also develop one’s character.

_________ hard one may work, one cannot master a foreign language in a year or two.