He finish his homework yesterday, but he couldn't find it anywhere.
| A．has |
| B．had |
| C．did |
| D．does |
______ around the Water Cube, we were then taken to see the Bird’s Nest.
| A．Having shown | B．To be shown | C．Having been shown | D．To show |
Recently people have made great progress in using ______ power of nature to produce ______ electricity.
| A．a; the | B．/ ; / | C．the; / | D．a; an |
- Would you prefer to watch TV or see a movie?
- ______. It’s up to you to decide.
| A．I’d rather stay home | B．Either is OK with me |
| C．That’s all right | D．That’s not my favourite |
What ______ to so many students coming to the school gate?
| A．attracts | B．impresses | C．belongs | D．appeals |
Large quantities of water ______and lots of fish died.
| A．has been polluted | B．were polluted |
| C．is polluted | D．was polluted |