With many cities in China dreadfully blanketed by thick haze, the environment problem is _____ Chinese people concern most nowadays.
| A．what | B．which | C．where | D．when |
Only in this way _________ make progress in our English study.
| A．can we | B．we can | C．we are able to | D．can we be able to |
A cook will be immediately fired if he is found _________ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |
_____by one of his fellow soldiers，the wounded man walked slowly across the field．
| A．Supporting | B．Supported | C．Support | D．Been supported． |
Jenny worked hard before the final examination，and it_______．She got an A．
A．showed off B．paid offC．put off D．took off
All the things __________ must be done well．
| A．worth to do | B．worthy of being done |
| C．worthy doing | D．worth of doing |