—It was cold and the road was icy.
—It a comfortable journey.
| A．can’t be | B．shouldn’t be | C．mustn’t have been | D．couldn’t have been |
The police _____ searching for a tall dark man with a beard. Till now more than one person _____ suspected.
| A．is; is | B．is; are | C．are; is | D．are; are |
I’m sure your suggestion will____the problem.
| A．contribute to solving | B．be contributed to solve |
| C．contribute to solve | D．be contributed to solving |
Peter is my close friend, who can be _______ what he promises.
| A．relied on to do | B．relied to do | C．relied on doing | D．relying to doing. |
The dog was _____its owner’s luggage, so nobody could get it.
| A．preserving | B．defending | C．guarding | D．protecting |
.—You were brave enough to raise objections at the meeting.
—Well, now I regret ___ that.
| A．to do | B．to be doing | C．to have done | D．having done |