Miss Li came into the classroom ____ a smile _______ her face.

This pair of jeans looks nice___ Sandy ,because she looks very nice___ blue.

Can you please spend _____ explaining it _____ us?

--How many members are there on the team?
--Eight this term. But there will be ten _________ next term. I’m not quite sure.

It’s very kind _____you to help me with my maths.  It is hard _____me to learn it well. 

He is very ______and he always explains things _____us.

Jim often goes to school _____ bike. But today he goes to school _____ the school bus. 

There is an art room ___ the first floor.
A. in            B. at         C. on

Thanks for your help, John . We         have finished our work so
early             your help.

I like to sit __________ the bus .