The school bus is coming down the street .
| A．学校 | B．车站 | C．街道 | D．山 |
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
We can plant more ____________.
A. trees and grass
B. tree and grass
C. tree and grasses
I like to go ____on Sundays.
A. fishing B. to fish C.fish