她正在做什么？如何表达：
A.What is he doing ?
B.What is she doing?
What is your father doing ?如何回答：
A.He is writing a letter.
B.He is a teacher.
“你正在做什么？”如何表达：
A.What are you doing?
B.What do you do ?
我的生日是一月一日，用英语怎么说：
A.My birthday is on January first.
B.My birthday is in January first.
“你最喜欢哪个季节？”如何说：
A.Which season do you like best?
B.What are you doing now ?