Ms Jin is a teacher a primary school. ( )

A．at

B．in

C．on

She is ______ the playground. (   )

A．on

B．in

C．between

He is ___ home. （   ）

A．at

B．for

I' m _________Class Three, Grase Four. ( )

A．on

B．in

C．at

填空题。
【小题1】My grandma ________(watch) TV every day .
【小题2】Ann often __________ (watch) TV at home. She ________ (watch) again last night.
【小题3】He wears shorts __________ Australia.
【小题4】Danny __________ (buy) three balls.
【小题5】—Swimming is __________ (easy) for me. I can’t swim.