There was a large box behind the door and Peter couldn't _____ falling over it in the darkness.
| A．help | B．resist | C．avoid | D．prevent |
As the storm drew near, black clouds were _____ over the sky.
| A．smoothing | B．wandering | C．running | D．gathering |
The city was _____ to me, and I didn't know where to go.
| A．interesting | B．large | C．strange | D．exciting |
The book is not _____ what we paid.
| A．worth | B．valuable | C．cost | D．dear |
The thief ran away at the _____ of a policeman.
| A．sight | B．screen | C．sound | D．seeing |
There are usually at least two _____ of looking.
| A．means | B．ways | C．directions | D．courses |