题目内容

用所给单词的适当形式完成短文。
     I made my first trip to clean the forest that afternoon three years ago.I ___1___(take) a big black
rubbish bag with me. Ten minutes after starting to pick up litter, my bag was filled with cans, bottles,
broken glass
and newspapers.
     I ___2___(be) to the forest more than ten times to pick up litter ever since then. I like to be there
and I ___3___(feel) great to do something for the environment.
     I can't understand why people drop litter.  But I ___4___(keep) picking up litter until  they  stop
dropping it.
     What I ___5___(do) now is only a small bit to help the earth, but I still think it is important.    
1. took 2. have been 3. feel 4. will keep/am going to keep  5. am doing
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