You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.
A. in case C. unless
C. though D. as
Thank you for your timely help; otherwise we _______ in great trouble now.
| A．are | B．would have been | C．would be | D．were |
— How are you getting on with your work?
— Oh, I’m sorry. Things aren’t going so well as _______.
| A．plans | B．planning | C．planned | D．to plan |
Little Tom easily _______ himself to the American life as he moved to the USA with his parents.
| A．suited | B．fit | C．matched | D．adapted |
— Did you see a man in black pass by just now?
— No, sir. I _______ a newspaper.
| A．read | B．was reading | C．would read | D．am reading |
In the past few years, he has collected a lot of ancient coins, _______ date back to the Ming and Qing Dynasties.
| A．most of them | B．most of that | C．most of which | D．most of those |