—Li Ying is.

—They are standing over there.

 they at the moment?

The workers  now.

    It was Tree Planting Day yesterday. We (go）to the hill to plant trees our teacher. There we learned how (plant) trees. We also learned a lotplants. For example, trees can(help)clean the air. They give us food like apples,(peach), orangespears. People and other animals need (they)to live. We planted many trees yesterday. We were very(tiring), but we felt very (happily).