In the US they focus on creative thinking skills, _____ in China they only focus on theory．
| A．since | B．when | C．while | D．now that |
—What's the boys' favorite sport?
—__________ of boys like playing football.
| A．None |
| B．The most |
| C．The majority |
| D．Every |
Every possible means __________ to prevent air pollution, but the sky is still not clear.
| A．are being used |
| B．have been used |
| C．has been used |
| D．had been used |
We must __________ to the public the simple fact thatdrugs are dangerous.
| A．get through |
| B．get down |
| C．get back |
| D．get across |
That was the first time __________ I __________ face to face with the president.
| A．when ； had come |
| B．that ； have come |
| C．when ； came |
| D．that； had come |
I walked up to the top of the hill with my friend, __________ we enjoyed a splendid view of the lake.
| A．which |
| B．where |
| C．who |
| D．that |