The boy wanted to ride his father’s new motorcycle in the crowed street but his father told him .[ ]

It is not until he returned to his hometown ______ the great changes that had happened.

As China ________ into a market economy, the government no longer assigned jobs, food or free housing to urban residents.

Don’t you think it necessary that he ______ to Miami but to New York？ —I agree，but the problem is ______ he has refused to.

we have chat rooms, textmessaging, emailing… but we seem ______ the art ofcommunicating face-to-face