如果你想介绍你的朋友 John,应说:_______A. This is John. B. I’m John.
I often ping-pong . A. go B. playing C. play
--Do you like roller skating?-- . A. Yes,I am B.Yes,I do . C. Yes, I don’t.
I use your eraser? A. Do B. Am C. Can
I want to a taxi driver ? A. is B. are C. be
Don’t run down the stairs. It’s . A. safe. B. dangerous C. Here you are.