The building around the corner caught fire last night. The police are now ______ the matter.
| A．getting through | B．worki ng out |
C．looking into | D．watching over |
Scientists are convinced______ the positive effect of laughter______ physical and mental health.
| A．of ; at | B．by ; in | C．of ; on | D．on ; at |
The prize will go to the writer______ story shows the most imagination.
| A．that | B．which | C．whose | D．what |
If we sit near____ front of the bus , we’ll have______ better view.
| A．/, the | B．/, a | C．the, a | D．the, the |
---Do you need more beef steak?
---______.
| A．Not exactly | B．Hold it | C．You ‘re welcome | D．No, thanks, I’m full |
They _____ have arrived at lunch time but the flight was delayed.
| A．should | B．can | C．must | D．will |