②The family took care of the sick boy ____________.

　　③When the bell rang, the audience left the hall ____________.

　　④They ____________ to drive the kids to school.

　　[答案]　①in return　②by turns　③in turn　④took turns

　　2.

　　①I watched a __________ TV football match last night.

　　②The thief finally admitted having stolen the mobile phone before __________ proof.

　　③They tried to keep the fish __________ in the pool.

　　④The girl has a sweet, __________ personality.

　　[答案]　①live　②living　③alive　④lively

Ⅲ.单句改错

　　1．We need alive music to pep up the party.____________

　　[答案]　alive→lively

　　2．We took the turns doing the driving on the way up to

Canada.____________

　　[答案]　去掉第一个the

　　3．At that time we observed the boy play at the gate.____________

　　[答案]　play→playing

　　4．Paul's mother had him adopting because she couldn't look after him.____________

　　[答案]　adopting→adopted

　　5．If you're free at two o'clock on Friday, I shall be delightful to show you around the city.____________

[答案]　delightful→delighted