The latest wave of smog(雾霾) ,_____ first swept into Shanghai and Jiangsu province on Dec. 1st ,_______ at least four car accidents due to low visibility.
| A．in which; cause | B．where ; caused |
| C．which ; has caused | D．that; is caused |
time tomorrow, I would teach you how to play the piano.
| A．Had I had | B．If I would have | C．If I have | D．Were I to have |
The boy hot on the forehead. He must be sent to the hospital at once.
| A．is felt | B．felt | C．feels | D．was felt |
—It looks as if it’s going to rain, but I’m not sure whether the windows are shut in my apartment.
—You as well go back to have a look.
| A．should | B．might | C．need | D．can |
The number of sharks has fallen greatly in the past three years, so measures must be taken to oppose sharks illegally.
| A．people to hurt | B．people from hunting |
| C．people hurt | D．people’s hunting |
Since no evidence has been found so far he was guilty, he has to be set free.
| A．before | B．whether | C．that | D．when |