42．A．months                  B．hours                    C．days                      D．minutes

41．A．no one else             B．I                           C．everyone               D．anyone

40．I will not buy that car because I have _________ money．

A．got out of            B．taken out of         C．looked out of          D．run out of

I can't remember when I started collecting litter．But it was when I got tired of seeing litter nearby and realized that ___41___ was going to pick it up．

I live near a forest．I can walk there in three ___42___! I ___43___ go there to play with my dog．But one day there was so much litter there that I became very unhappy．I decided I had to clean up the forest．I wanted to ___44___ happy going there again．

I made my first trip to clean the forest that afternoon．I took a big black rubbish bag with me．I started to pick up litter and ten minutes ___45___，my bag was full! There were cans，bottles，broken glass and newspapers in the bag．From then on，I went to the forest four times a year to pick up the litter．I often ___46___ there for three hours．It makes me feel great to do something for the environment．

After each trip，I ___47___ all the litter that I've collected．If any of it is recyclable（可回收的），I keep it and sell it．I can't ___48___ why people drop litter．But I will keep picking it ___49___ they stop dropping it．I know I am only doing a small bit to help ___50___ but I still think it is important．

39．Teenagers have all kinds of dreams．_________，some students would love to go to the moon some day．

A．After all                B．At once                  C．In fact                    D．For example

38．--Is there _________ in today's newspaper?

--Yes．One more person was tested positive for the N1H1 influenza（流感）in Beijing．

A．nothing new          B．new nothing         C．anything new          D．new anything

37．In our country _________ middle school students want to work as a teacher in the future．

A．thousand                                                  B．thousand of

C．thousands of                                               D．two thousand of

36．I hear that he will be back _________ two weeks' time．

A．at                           B．in                           C．after                       D．for

35．After discussing，the students _________ some good ideas to work on the project．

A．put up                 B．set up                  C．caught up with        D．came up with

34．-- _________ you _________ the pet dog yet?

       --Not yet，Mom．Oh，it may be hungry now．

A．Have；fed              B．Are；watering．     C．Did；pack              D．Will；walk

33．Not only Mr. and Mrs. Read but also their son _________ abroad twice．

A．have gone             B．has been              C．have been               D．has gone