Are you going to __________ this challenge?（挑战）
| A．take up | B．take down |
| C．take off | D．take on |
He tired his best to find a proper roommate to _______.
| A．live | B．live in |
| C．live with | D．living in |
—Sally, which dress do you like best?
—Oh, I’ve tried several ones on, but _______ of them fit me well.
| A．both | B．either | C．neither | D．none |
.Our country _______ rapidly in recent years, but it is still a _______ country.
| A．develops; developed |
| B．has developed; developing |
| C．has developed; developed |
| D．develops; developing |
_______ you eat this kind of fish, you’ll never forget its special taste.
| A．Unless | B．Once | C．Until | D．So |
Lots of volunteers _______ the people there _______ help when an earthquake happens.
| A．offer; with | B．give; to |
| C．provide; with | D．afford; with |