Welcome!
A.谢谢！ B.欢迎！
“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 .
当你想要询问别人的生日是什么时候时，应该如何问：
A. When do you have breakfast?
B. When is your birthday?
--- _____ they taking a picture?
--- Yes, they are.
A. AmB. IsC. Are
Kate ______ playing chess.
A. am B. is C. are