Who should be responsible for the heavy burden of the students— ______ the test system instead of the teachers.

Mary was caught in a traffic jam and by the time she arrived at the airport her father’s plane_______

Do you know the Chinese sky lanterns—Sure. They’re made bamboo and they are covered paper.

The research on the new flu virus vaccine ischallenging and demanding. Who do you think can do the job —_______ my students have a try

What do you think of The GrandMasters,Lily–I love it. I think it’s a very successfulaction movie, _______ Tony thinks it’s boring.