12．All the information except these two pieces         writing the article．

A．have been used to                                    B．has been used to

    C．have been used for                                     D．has been used for

11．Pollution is a serious problem．Scientists have           some good ways to solve It．

A．come up with                                          B．come on   

C．come out                                                   D．come up

10．―You forgot         the door．

    ―Oh．          ．I'll go and close it．

A．closing；so did I                                     B．to close；so I did

C．close；；nor did I                                       D．to close；neither did I

9．一Could you tell me        ?

   ―About three hours．

A．how long it takes to fly to Hong Kong

B． how long it took to fly to Hong Kong

C．how long does it take to fly to Hong Kong

D．how long did it take to fly to Hong Kong

8．―Would you like some more tea?

  ―              ．please．

A．No more              B．Just a little           C．I've had enough      D．Yes，1 would

7．―l'm sorry，John．I             your radio for such a long time．

―Never mind．You can still         it a little longer if you like．

A．have borrowed：keep                                B．have lent；kept

C．have kept：keep                                          D．have returned；kept

6．―Many teenagers are made            what they're not             。

―I agree．

A．to do：interested                                     B．to do；interested in

C．do：interested in                                       D．doing；interested in

5．Allen spent time and made             sentences than Tony．

A．fewer：more       B．1ess；more          C．much；many          D．more；many

4．         important English speech contest they are listening to!

A．What                   B．How                    C．What an                 D．How an

3．Would you mind             me how          English words?

A．tell：to remember                                   B．telling；remember

C．telling：to remember                                 D．tell；remember