读对话，并填空。
Danny: Jenny, this is my teacher.
Jenny: What's her name?
Danny: Her name is Zhang Mei.
Jenny: This is Wang Hong. She is my friend.
Danny: Hello, Wang Hong. Nice to meet you!
Wang Hong: Hello, Danny. Nice to meet you, too.
1. Danny's teacher's name is __________________.
2. How many girls? __________________.
3. Jenny's friend's name is __________________.
