1．If you really have to leave during the meeting，you'd better leave ________ the back door.

A．for　　　　　　　　B．by

C．across D．out

解析：选B。根据句意："如果你必须在会议期间离开，你最好从后门走"。故选B。

2．-Are you happy with your new computer.

-No，it is ________ me a lot of trouble.

A．showing B．leaving

C．giving D．sparing

解析：选C。根据句意："你对你的新电脑满意吗？""不满意，它给我带来了许多麻烦"。故选C。

3．The teacher stressed again that the students should not ________ any important details while retelling the story.

A．bring out B．let out

C．leave out D．make out

解析：选C。句意：老师再次强调：学生们在复述故事时，不应漏掉任何重要的细节。bring out阐明，出版；let out放掉(水，气等)，泄露；leave out遗漏；make out理解，辨别出。故选C。

4．完成句子

(1)走的时候，让厨房的灯开着。

________ ________ ________ ________ ________ when you left.

答案：Leave the kitchen light on

(2)刷牙时不要开着水龙头。

Don't ________ ________ ________ ________ while you brush your teeth.

答案：leave the water running.

2.charge　vt.& vi.　收费；要价，索价；控诉；充电

n．　负责，掌管；费用

(回归课本P22)Listen to me，young man-remember the day when we left you in charge?

听我说年轻人--还记得我们让你负责的那天吗？

归纳拓展

例句探源

①(朗文P319)They charged me $2 for this candy bar.

这块棒糖他们收了我两美元。

②(朗文P319)Her husband was charged with her murder.

她丈夫被指控谋杀了她。

③(牛津P319)I'm leaving the school in your charge(＝in the charge of you)．

我这就把学校交给你管。

④(牛津P319)He took charge of the farm after his father's death.他在父亲去世后掌管了农场。

⑤(牛津P319)Delivery is free of charge.

免费送货。

5．介词填空

(1)Will you be ________ charge ________ the company when I am away?

答案：in；of

(2)After his father died，the son took charge ________ his business.

答案：of