—Do you know who cleaned the blackboard,Tina?—Yes.John ________.A.doB.doesC.did
The nurse doesn't feel well today, _____ she still works very hard.
Tom has been in the factory _________he left school.
We didn't begin our group discussion ______ every member came.
—Why didn't you come and buy the new book with me yesterday? —Sorry, I ______ at that moment.
—Do you like watching The Voice of China on TV? —Sure. It's nice. But I ______ Sports News.