Half the world's population __________ water shortages within 15 years according to the World Bank, just one of many recent alarming reports on the world's fresh water supply.
| A．are suffering |
| B．have been suffered |
| C．will suffer |
| D．were suffered |
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 |
He wrote a lot of novels, none of ______ was published, though.
| A．them | B．what |
| C．where | D．which |
--Will you go to Tina’s birthday party?
--No. ______ invited, I can’t go. I’ll be very busy then.
| A．Even if | B．As if |
| C．Unless | D．In case |