Ted and his friends established a website offering useful information about thunderstorms ______ similar accidents happening.
| A．prevent | B．preventing | C．to prevent | D．prevented |
We set off early ____ next morning and came to ____ unknown valley after about an hour.
| A．the; the | B．the; an | C．/; a | D．/; the |
We such great advance without your efforts. Thanks a lot.
| A．can’t have made | B．couldn’t have made |
| C．were unable to make | D．are unable to make |
Will these vegetables _____ for four to five days in the fridge?
| A．be stayed fresh | B．stay fresh | C．stay freshly | D．be stayed freshly |
The audiences’ reaction made it _____ that this play was a great success.
| A．evident | B．familiar | C．relevant | D．skeptical. |
E-mail, as well as telephones, an important part in daily communication.
| A．is playing | B．have played | C．was playing | D．play |