He asked us to him ______ carrying through their plan.
| A．assist; to | B．assist; by | C．assist; of | D．assist; in |
With the boy __________ the way, we had no difficulty in finding his house.
| A．to lead |
| B．leading |
| C．have led |
| D．led |
I always ___________ on life when listening to Beethoven's symphonies.
| A．react |
| B．recover |
| C．reflect |
| D．respond |
As a result of destroying the forests, a large of desert __________ covered the land.
| A．number; has |
| B．quantity; has |
| C．number; have |
| D．quantity; have |
Plastic parts can __________ metal ones in many machines. But they don't last long.
| A．substitute with |
| B．be replaced with |
| C．take the place of |
| D．in place of |
Large quantities of china made in Dehua __________ to the US and Europe.
| A．has exported |
| B．will export |
| C．is exported |
| D．are exported |