There __________ some children in the painting room. They are studying painting.
A. is B. are C. am D. was
–Have you ever been Canada?
--__________.But I hope to go there one day!
A. Yes, I have B. Yes, I haven't C. No, I have D. No, I haven't
--Would you mind opening the window? It’s too hot.
--__________.
A. Sorry. I wouldn't. B. No, of course not.
C. It doesn't matter. D. Yes, please.
—Listen ! Helen is singing in the next room.
—It __________ be Helen. She is in Tianjin now.
A. can’t B. mustn’t C. may not D. shouldn’t
_________ exciting match it is! Wonderful players and wonderful teams!
A. What B. What a C. What an D. How
Which of the following signs means you can escape from the fire?
A. 
B. 
C. 
D. 
