---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
| A．into | B．onto | C．to | D．in |
Experts believe ________ people can waste less food by shopping only when it is necessary.
| A．why |
| B．where |
| C．that |
| D．what |
—Would you mind my sitting here _______ lunch?
—_______.
| A．have; No, not at all |
| B．and having; No, thank you |
| C．to have; Never, go ahead |
| D．and have; Oh, it’s my pleasure |
When I came to myself, I found myself _______ and _______ a group of people.
| A．to be at hospital; surrounding by |
| B．at hospital; surrounding |
| C．at hospital; surrounded by |
| D．at hospital; to be surrounded |
The bill would ________ workers twelve weeks of unpaid leave for family emergencies.
| A．permit |
| B．supply |
| C．admit |
| D．provide |
The little boy came riding at full speed down the motorway on his bycicle. ________ it was!
| A．What a dangerous scene |
| B．What dangerous a scene |
| C．How a dangerous scene |
| D．How dangerous the scene |