---I’m going to the States for further study.
---How long ____ you ___there?
| A．had , stayed | B．did, stay | C．have, stayed | D．are, staying |
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 |
___ nice, the food was sold out soon.
| A．Tasted | B．Tasting | C．To taste | D．Being tasted |