Whenever I was in trouble, he would do what he could _____ me.
| A．help | B．helping | C．to help | D．helped |
The single most important factor ____ contributes to success is _____ you do every single day．
| A．that; that | B．which; what | C．which; what | D．that; what |
Most of the professors _____ to our school were from South Africa．
| A．invited | B．to be invited | C．being invited | D．had been invited |
They all looked ____ at the master and felt quite _____．
| A．sad; sad | B．sadly; sadly | C．sad; sadly | D．sadly; sad |
Food prices are climbing around the world because farmers can't ____ demand for grain．
| A．catch up with | B．keep up with | C．grow out of | D．put up with |
——Shall we go skating or stay at home?
—— Which _____ do yourself?
| A．do you rather | B．would you rather |
| C．will you rather | D．should you rather |