当别人问你问题，但你不知道答案时，你应该说：______ (   )

A．Yes, it is.

B．I don't know.

C．Is it five?

用所给词的适当形式填空
1. We can touch with ______ (we) hands.
2. I ______  (like) lemons. _______ (it) too sour.
3. Do you like ______ (fox)? No, I _____ (do).

句型转换
1. Does Amy like music?（对画线部分提问）  
_______does Amy like?
2. They draw pictures in art club.（改为否定句） 
They _______ _______draw pictures in art club 
3. I have five music lessons in a week.
_____ ______ music lessons do you have in a week?．（改为特殊疑问句）   
4. I see two classmates in the playground.（对画线部分提问）   
_______ _______ you see two classmates? 
5. Lili usually goes to work by bike.（对画线部分提问）
______ _______ Lili usually _______ to work?

______touch the machines, please! They are dangerous. (   )

A．Not

B．Don’t

C．Be

Copy.(抄写)：There weren’t any benches here before.