You must wait ________ the green light .
当别人对你说“Good bye!”时,你应说:A. See you! B. Morning!
你把Peter介绍给大家时说: A. Hi! This is Peter. B. Hi! My name is Peter.
当别人对你说“let’s make a puppet”,你应说:A.Great! B.Good morning.
当你询问对方的名字时,你应说: A. How are you? B. What’s your name?
当别人对你说“How are you?”时,你应说:A. How are you? B. I’m fine, thank you.