15．________ it comes to the increasing use of motor vehicles in the cities，some people think it should be limited．（　　）

A．

Because

B．

Once

C．

When

D．

While

14．Influenza H1N1is an illness that can result in death unless left       in time．（　　）

A．

treat

B．

to treat

C．

treating

D．

treated

13．He rrarely（极少） catches a cold as he takes regular exercise．

12．The exhibition he had been looking forward to _________ was _________ until next Sunday．（　　）

	A．	visit； put off		B．	visiting； put off
	C．	visit； put on		D．	visiting； put on

11．假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有5处语言错误，每句中最多有两处．错误涉及一个单词的增加、删除或修改．增加：在缺词处加一个漏词符号（∧），并在其下面写出该加的词．删除：把多余的词用斜线（﹨）划掉．修改：在错的词下划一横线，并在该词下面写出修改后的词．注意：1．每处错误及修改均仅限一词；2．只允许修改10处，多者（从第11处起）不计分．
Dear May，
     I have story to tell you．Last Friday，I went home by bus．I see an old woman with a basket full of egg when I got on the bus．I learned from his conversation with the conductor that she didn't have enough money for a ticket．I quick gave one yuan to the conductor to pay for an old woman．The woman thanked me a lot，but even wanted to giving me some eggs．I refused her because of I thought it was my pleasure help someone in trouble．Don't you think so？

10．I'll never forget the day ______ I worked with you in the Beijing Olympic Games．（　　）

A．

where

B．

when

C．

that

D．

in that

9．Do you know the old man  ________ son is standing with there？（　　）

A．

which

B．

who

C．

whose

D．

whom

8．character（　　）

A．

machine

B．

coach

C．

choose

D．

technology

7．explode（　　）

A．

exactly

B．

exercise

C．

explore

D．

example

6．motto（　　）

A．

respond

B．

homeland

C．

host

D．

honey