“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 ?
打电话时说：“我是小明”该如何说：
A. I am Xiaoming.
B. This is Xiaoming .