A: Good morning. I'm Liu Tao. What's your name?
B: Good morning. My name is Mike.
A: Nice to meet you, Mike.
B: Nice to meet you too.
C: Hello! Boys and girls! It's time for class.(该上课了。)
A&B: OK! Mr Green.
Welcome to Tianjin Zoo. The monkey is in the tree. It has a big mouth and a long tail. There is a bird in the tree, too. It's in the nest. You can also see lions, elephants, pandas, kangaroos and tigers in the zoo. The animals are our friends. I love them.
Sam: Good morning! Can I help you?
Ann: Good morning! I can't find (找到) my sweater.
Sam: OK. What colour is your sweater?
Ann: It's pink.
Sam: Is this your sweater?
Ann: No, it isn't.
Sam: Is that your sweater?
Ann: No, it isn't. A rabbit is on my sweater.
Sam: Oh! It must be (一定是) this one.
Ann: Yes, thank you.
Sam: You are welcome!