Historically, _____ main material for making tables has been wood, but _____ metal and stone have also been used.
| A．the; the | B．the; / | C．/; the | D．/; / |
To master a foreign language, ______.
| A．a lot of practice is needed |
| B．it needs a lot of practice |
| C．practice is in need of |
| D．one needs a lot of practice |
With a lot of difficulties _______, they went to the seashore and had a good rest.
| A．settled | B．settling |
| C．to settle | D．being settled |
It is difficult to imagine his ______the decision without any consideration.
| A．accept | B．accepting |
| C．to accept | D．accepted |
__________ by many tall trees, the lake looks more beautiful.
| A．Surrounding | B．Surrounded |
| C．Being surrounded | D．To surround |
Jane returned from work, only______ that his house had been broken into.
| A．found | B．to find |
| C．finding | D．to have found |