Let’s make friends ________ the new girl in our class.

I think it’s easy ________you _________English well.

Mother’s Day is coming ______ May 11^th this year.

Michael often goes to school ____ foot.
A. by                 B. in                 C. on

He found the key _____the door.
A.of       B.to         C.for

The teachers are very friendly ______their students.
A.to     B.at        C.on

Everything begins to grow ______spring.

I often go to sleep ________10:00 p.m. ________7:00 a.m.．

The cat climbs into the sitting-room _______the open window．

His flat is ________the _______floor in a building on a busy street．