Look! The children _____ in the playground happily. （   ）

A．play

B．is playing

C．are playing

—What is the little boy_______?（   ）
—He is sleeping.

A．do

B．does

C．doing

听，学生们正在唱歌：Listen! Students are_____________(eating /singing).

用所给词的正确形式填空。
【小题1】Listen! Someone ______ (sing) in the music room.
【小题2】Why ______ (do) they like running?
【小题3】He ______ (not like) playing basketball. He ______ (like) playing tennis.
【小题4】She sometimes ______ (go) to school on foot.
【小题5】My hobby is skating. Is skating ______ (you) hobby?
【小题6】I often help my mum ______ (clean) the windows on Sundays.

Why is she ________ her glasses? (  )

A．wearing

B．wear

C．wears