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 I can’t remember when I started collecting litter. But it was when I got tired of ___36___ litter nearby and realized that no one else was going to pick it up.
    I live ___37___ a forest in Ohio, America. I can walk there ___38___ three minutes.I used to love going there to play with my dog. But one day there was ___39___ much litter there that I became very unhappy. I decided I had to clean up the forest. I wanted to __40__ happy going there again.
     I ___41___ my first trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes ____42_____ starting to pick up litter, my bag was full! It had cans, _____43___, broken glass and newspapers in it.
     From then on,  I ___44____ to the forest four times a year to pick up litter. I’m often there for three hours. It makes me feel ____45____ to do something for the environment. After each trip, I look at all the litter that I’ve found. If _46___ of it is recyclable, I keep it.
     I __47___ understand why people drop litter. But I will keep picking it up __48___ they stop __49___it.I know I am only doing a small bit ___50_____ the Earth, but I still think it is important.
(    )36.A. seeing                      B. throwing           C. dropping           D. cleaning
(    )37.A. far away from          B. near                  C. nearly               D. alone
(    )38.A. after                        B. for                    C. with                 D. in
(    )39.A. such                        B. very                 C. so                    D. too
(    )40.A. make                       B. feel                  C. look                 D. find
(    )41.A. went                              B. made                C. got                   D. tried
(    )42.A after                         B. later                 C. before              D. of
(    )43.A. juice box                 B. plastic bag        C. bottles              D. waster papers
(    )44.A. had gone                 B. have gone                C. went                       D. will go
(    )45.A. tired                         B. sad                   C. interesting         D. great
(    )46. A. many                     B. some                C. any                  D. much
(    )47. A. didn’t                     B. mustn’t             C. needn’t             D. can’t
(    )48. .A. until                      B. after                 C.as soon as                D. when
(    )49A. to drop                    B. dropping          C. being dropped   D. drop
(    )50.A. helped                     B. to help              C. help                 D. helping

Mrs. Smith isn’t here. She _______ to the station to meet her husband.

          A. has gone          B. has been          C. goes

--- Where is Lucy?

--- She isn’t here. She has          Beijing.

A．gone             B．gone to           C．been to           D．been

--- Let’s go to Canada for a holiday.

--- Sorry, we won’t go there. All of us except him _______ to Canada.

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

---Where are your parents?

   ---They ______ to England.

   A. have gone        B. have been       C. had gone