Expo 2010 Shanghai China __________ on both banks of the Huangpu River in the city of Shanghai, China, from May 1 to October 31, 2010.
| A．is being held | B．is holding | C．will hold | D．holds |
We _____ on this project for four hours. Let’s have a rest.
| A．are working |
| B．have been working |
| C．worked |
| D．had worked |
There are over 58,000 rocky objects in _____ space, about 900 of which could fall down onto _____ earth.
| A．the; the |
| B．/; the |
| C．the; / |
| D．a; the |
—Did you catch what I said?
—Sorry. I _____ a text message just now.
| A．had answering |
| B．have answered |
| C．would answer |
| D．was answering |
I feel so excited! At this time tomorrow morning I _____ to Shanghai.
| A．will be flying |
| B．will fly |
| C．have been flying |
| D．have flown |
“The moment _____ soon,” he thought to himself, waiting nervously.
| A．came |
| B．has come |
| C．was coming |
| D．is coming |