Li Ming is ________ reading a book. (  )

A．no

B．not

C．don’t

Stop walking! The car is ____! ( )

A．come

B．to come

C．to coming

D．coming

The dog is ______  (come) out of the bag.

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.

Read and choose the wrong one:
I am doingmy homework yesterday. （_____）
A  B     C