Find out the mistakes and correct them. 找出错误并改正。
( ) 1. I have to put on my boots on a rain day.
A B C
( ) 2. Li Ming is writing an letter in the corner.
A B C
( ) 3. The peas are in the stove.
A B C
( ) 4. I'm a 12 year old boy.
A B C
( ) 5. Danny, you should sing soft.
A B C