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The earth is our home．Everyone should do  1  to protect her．As students，what should we do? In the last week's class meeting，we discussed the 2  ．In the end，we decided to  3 rubbish along the Purple Mountain this Sunday．

It was windy on Sunday morning,  4   all of us reached the foot of the mountain on time．We looked excited because we thought it was   5   for us to do this．When we climbed up the mountain, we were   6  to see many plastic bags and different kinds of bottles and tins． We spent about four hours  7   them up．When we got to the top of the mountain，we collected five bags of rubbish．Some of us were  8 tired to walk．We had to  9  a rest．

Now, there is more and more pollution．If we don't take action to  10  the pollution，what will the world be like in the future?

1．A．everything             B．something            C．anything                 D．nothing

2．A．answer                  B．event                   C．problem                 D．project

3．A．pick away              B．pick up                C．pick off                 D．pick out

4．A．but                        B．though                 C．for                       D．if 

5．A．useless                  B．unnecessary       C．meaningful             D．hard

6．A．excited                  B．lucky                   C．happy                     D．surprised

7．A．clean                     B．cleaned                C．to clean                  D．cleaning

8．A．too                        B．so                       C．very                             D．such

9．A．get                        B．have                    C．make                     D．do

10．A．hold                    B．stop                     C．put out                   D．take away