My friend_____ a story in the classroom at 3:10. (  )

A．is read

B．reads

C．is reading

Tom is ______ a new coat. He can ______ it every day. (    )

A．wear, wear

B．wearing, wears

C．wearing, wear

Amy and Lily ________ bikes. (  )

A．riding

B．is riding

C．are riding

用括号内单词的正确形式填空：The sun is shining and the wind is_______. ( blow , blowing ).

用所给词的正确形式填空。
【小题1】We should stop _________ (throw) rubbish into rivers.
【小题2】In the past, the Earth _________ (be) clean and beautiful.
【小题3】My brother is __________ (plant) trees in the backyard.
【小题4】The Earth __________(get) sick now.
【小题5】We shouldn’t __________ (cut) down so many trees.