These workers preferred to work extra hours at night_________leave the work until the next week.
| A．other than | B．more than | C．instead of | D．rather than |
Thinking ______ you know_______ in fact you don’t is a terrible mistake.
| A．that; that | B．what; what | C．that; what | D．what that |
He is only too ready to help others, seldom, ____, refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
--- Don't worry. I've just sent an ambulance to you. They ________ be there any second.
| A．could | B．might | C．would | D．should |
At first he was not satisfied with the new job but decided to give himself a few months to see ___________ it got any better.
| A．when | B．how | C．why | D．whether |
I promised to get there before 5 o’clock, but now the rain is pouring down. They _______ for me impatiently.
| A．may wait | B．ought to wait |
| C．could wait | D．must be waiting |