---Let’s meet four Sunday afternoon.
---OK.
A. at; in B. at; on C. in; on
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 .