The building around the comer caught fire last night. The police are now _____the matter.
| A．geeing through | B．working out | C．looking into | D．watching over |
Across from the KFC_________a big supermarket whose business is taking off recently.
| A．stand | B．is standing |
| C．which stands | D．stands |
On September 8th, Obama, President of America, made an inspiring speech at the school opening, which has left a lasting ___________ on the audience.
| A．expression | B．conclusion |
| C．impression | D．information |
John’s quick action shows that ________ knowledge of first aid can makereal difference in saving a person’s life.
| A．a; the | B．a; a |
| C．/; the | D．the; a |
-----“________, sir?” -----“No. Go ahead.”
| A．May I use your dictionary |
| B．Do you mind if I use your bike |
| C．Would you mind opening the window |
| D．May I have a look at your new book |
In the environment area, there is a system ________ the waste is disposed of by using the principles of ecology.
| A．in which | B．which |
| C．on which | D．that |