I heard they went skiing in the mountains last winter.” “It ____ true because there was little snow there.”
| A．may not be | B．won’t be |
| C．couldn’t be | D．mustn’t be |
How he _______ get out of the prison ______ a mystery.
| A．could; is | B．can; is | C．was able to; remains | D．able to; remain |
____ the keeper ______ with a stick in hand, we escaped.
Finding; coming B．Found; come C．Finding; come D．Found; coming
You’re welcome to _______ in the Art Festival ______ in my campus next weekend!
| A．take part; holding | B．join; being held | C．participate; to be held | D．join; holding |
The building whose gate is _____ stands ______ to my school.
| A．open; closely | B．opened; closely | C．open; close | D．close; closely |
The bad weather made ____ difficult for the birds ______.
| A．it; migrate | B．that; migrate | C．that; immigrate | D．it; to migrate |