I often write_______my grandpa in China.   （ ）

A．in

B．on

C．to

根据图片内容回答问题。
1. — What does the man look like?
— He is_____________________.
2. — Is the man a doctor?
— _____________________.
3. — What does the old man like to do?
— He_________________________.　
4. — Where does the woman work?
— She ____________________________.

读一读，写一写。
1.usually ride his bike do my homework 

2.He’s not doing his homework now.

3.On Sundays, I usually play basketball.

读一读，写一写：make a newspaper____________________

Sam is playing _________ his toy train. （ ）

A．on

B．to

C．with