You can’t believe how terrible the fire is _______ you see it with your own eyes.
| A．though | B．because | C．unless | D．since |
—Mr. Hu, can you tell us how to learn swimming well?
—Sure. But remember we can learn nothing well _______ hard work.
| A．with | B．after | C．without | D．at |
I think _______ necessary for you _______ breakfast.
| A．this; have | B．that; to have |
| C．it’s; to have | D．it’s; have |
As we know, ________is good for our health.
| A．walks | B．walking | C．walks | D．walked |
— Must I finish my homework at once?— No, you ___________.
| A．hasn’t | B．mustn’t | C．needn’t | D．must |
—Would you mind the room?
—Certainly not. I’ll do it right away.
| A．clean | B．cleaned | C．cleaning | D．to clean |