When it ________ air pollution, Beijing faces the three“C”s, cars, coal and construction, which lead to Beijing's thick air pollution．

A．refers to

B．comes to

C．happens to

D．speaks to

Many of ________ friends British people make at school remain ________ friends for life, so it is true that schooldays are “the best of life”．

A．the;不填

B．the; the

C．不填; the

D．不填;不填

－Daniel, ________, but your radio is going too loud．

－Oh, I'm terribly sorry．I'll turn it down right now．

A．I need your help

B．I hate to say this

C．I'd like to talk with you

D．I'm really angry with it

For a moment nothing happened．Then ________ all shouting together．

A．came voices

B．did voices come

C．voices would come

D．voices had come

It's the second time that he has been to American, ________?

A．hasn't he

B．isn't he

C．hasn't it

D．isn't it

I'm caught in the traffic jam now．I ________ arrive late, so could you wait for me a bit longer?

A．must

B．need

C．may

D．can

According to the research, children are about twice as likely to suffer from the flu ________ adults．

A．as

B．so

C．such

D．than

Because of the financial crisis, days are gone ________ the shops were filled with Christmas shoppers in Britain．

A．when

B．where

C．whether

D．that

With the decision ________, the members present at the meeting were dismissed．

A．to make

B．to be made

C．made

D．having made

________ which one to buy between the two necklaces, she purchased both．

A．Deciding

B．Not deciding

C．To decided

D．Not to decide