The flight to Guangzhou had to be because of the heavy snow.
A. put up B. put off C. put away D. put down
-Sandy is upset now. Why don’t we ?
-That’s a good idea.
A. cheer her up B. wake her up C. pick her up D. make her up
You stand in line while waiting for the bus.
A. mustn’t B. can’t C. are supposed to D. don’t
By the time he arrived at the airport, the plane .
A. has taken off B. was taking off C. would take off D. had taken off
The boy was seen on the sports ground.
A. to play B. play C. played D. to playing
I went to the city, but my parents at home.
A. got B. remained C. staying D. remaining
