Please give the book back ______ three weeks. (   )

A．in

B．to

C．for

Here’s the travel plan _____ the summer holiday. (   )

A．in

B．for

C．at

I live _____________Guilin. （   ）

A．of

B．to

C．in

Where is he ________ (来自)?  (  )

A．from

B．with

读句子并选出合适的词填空

A．on

B．in

C．by

D．from

E．to

F．of

【小题1】My family is very important________me.I love my family.
【小题2】The smoke ________the cars and buses makes the air dirty.
【小题3】—How did you go to Pairs for your holiday?
—I went there ________train.
【小题4】We get a lot of things________ trees.
【小题5】It keeps them high________ the sky.
【小题6】We live________ the Earth.The Earth is our home.
【小题7】What should we do________keep the air clean?
【小题8】Take a piece________cloth.