A:What's this T-shirt made of?
B:I think it is made of cotton.
A:What're there coats made of?
B:I think they're made of wool.
skirt trousers pens blouse socks rulers
cotton silk plastic nylon wood metal glass polyester
Ask and answer
A:Where is tea grown?
It's grown in the southeast of China.
Where is salt produced?
It's produced in East and South China.
Where are trains made?
They're made in Zhuzhou