Read and circle the wrong one：
She listeningto the radio.
A    B C

看图，根据首字母提示，填写正确的单词：The birds are f________  near the tree.

It ______ (rain) now.

Wu Yifan is so tired. He is ________ under the tree.

A．sleeps

B．sleeping

C．sleep

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.