—_________ is that onion?
—Two yuan a kilo.          

_____ milk do you need?

—____   yogurt do you need?
—Three cups.

句型转换。
1. The shirt cost me only 50 yuan.(就画线部分提问)
   ______ ______ ______the shirt cost you?
2. Mr Zhang became an English teacher three yearsago. (改为同义旬)
    Mr Zhang ______ ______ an English teacher______three years.
3. Li Ming did his homework at school yesterday.(改为否定句)
    Li Ming ______ his  homework  atschool yesterday.
4. My brother is the tallest boy in his class. (改为同义句)
    My brother is______than ______student in his class.
5.We can't live if there is no water.(改为同义句)
    We can't live ______.

句型转换。

—_____ do you visit your teacher who taught you years ago?
—Once a year.

- ______ times has Liu Xiang been in the world competition?
-I have no idea. Let’s find it out on the Internet.

—_______ is your mother?    
—She is fifty. 

—I don't know how to deal with these old books.
—_____ giving them to the children from poor families?

— Don't worry. Mum will come to solve the problem.
—_____ she won't come?