听句子，从A、B、C三个选项中选出所包含的信息，并将字母标号填写在题前括号内。
( )（1）A. lake B. mountain C. river
( )（2）A. funny B. fun C. farm
( )（3）A. farm B. from C. for
( )（4）A. smart B. strong C. sweet
( )（5）A. pear B. watermelon C. bananas
Everybody should do something ____________ our planet.
A. to save
B. save
C. saving
What ____________ we do to protect our environment?
A. do
B. shouldn't
C. can
We can save water and ____________.
A. energy
B. energys
C. energies
We shouldn't ____________ litter on the ground.
A. throws
B. throw
C. threw
What can we do to make ____________ mother earth more beautiful?
A. us
B. we
C. our