The place _______ the bridge is supposed to be built should be ________ the cross-river traffic is the heaviest.
| A．which; where | B．at which; which |
| C．at which; where | D．which; in which |
With more trees being destroyed, huge quantities of soil ________ each year.
| A．are washing away | B．is being washed away |
| C．has been washed away | D．are being washed away |
With a lot of difficult problems_________, they are working hard day and night!
| A．settling | B．to settle |
| C．being settled | D．settled |
--What’s the event like?
--Several witnesses’ _______differ from the official version.
| A．accounts | B．opinions |
| C．description | D．explanations |
So much of interest ________ that most visitors run out of time before seeing it all.
| A．offers Beijing | B．Beijing offers |
| C．does Beijing offer | D．Beijing does offer |
The good thing about children is that they ________ very easily to new environments.
| A．adapt | B．appeal |
| C．adopt | D．apply |