读一读，再填空。
例: — I want to eat.
— Why?
— Because I am hungry.
1. — I want to put on my jacket.
— _____________________?
— ____________ I am cold.
2. — She wants to take off her sweater.
— _____________________?
— ____________she is hot.
3. — She is laughing.
— _____________________?
— ____________she is happy.
