1．
根据下列情景，选择正确答案。
1. 晚上有位阿姨来家作客，你应说：
.[ ]
A. Good moming.
B. Good evening.
C. Good afternoon.
2. 当你向李明介绍自己的朋友詹妮时，你应说：
[ ]
A. Hi! Li Ming! This is Jenny.
B. Hello! This is Li Ming.
C. Hello! I am Tom.
3. 当你想问别人正在干什么时，你应说：
[ ]
A. Where is he?
B. What are you doing?
C. What's this?