There is some doubt _________ Mr Zhang will sign the contract with us.
| A．when | B．whether | C．if | D．that |
They discovered the cause of the fire accidentally. They discovered it _______.
| A．fortunately | B．by chance | C．all of a sudden | D．on purpose |
How ________ you say that you really understand the whole story if you have covered only a part of the article?
| A．can | B．must |
| C．need | D．may |
We hope to go to the beach tomorrow, but we won’t go ____ it’s raining.
| A．if | B．when | C．though | D．because |
— Mum, hurry up. We’ll be late.
— I will be through in a minute. Have a little ________.
| A．time | B．patience | C．custom | D．presence |
—What do you think of the concert given by the famous Hong Kong singer?
—Not so good．In fact, it _____ to be a great disappointment.
| A．turned up | B．turned in | C．turned down | D．turned out |