Air has no smell taste．（    ）

A．and

B．or

C．of

It's very big _____ tall.(  )

A．but

B．and

C．or

句子改错
1. You look beautiful with your shoes.
_____________________________________________________
2. Boys only can wear shorts and trousers.
_____________________________________________________
3. Boys can’t wear skirts and dresses.
_____________________________________________________
4. Can you buy a pair of sock for me?
_____________________________________________________
5. Let’s go to shopping.
_____________________________________________________

They make noises______ they are hungry. (    )

A．where

B．what

C．when

I like summer ________ I like summer vacation. (   )

A．because

B．but

C．when