— May I smoke here?
— No, you ______ . This is a no-smoking room.
| A．needn’t | B．mustn’t | C．couldn’t | D．wouldn’t |
— ______ salt do we need?
— One spoon is enough.
| A．What | B．What kind of |
| C．How much | D．How many |
I’m going to ______ a new hobby. I want to learn how to take photos.
| A．take down | B．take up |
| C．turn down | D．turn on |
Robots are ______ do the same things as we do.
| A．enough clever to | B．clever enough to |
| C．too clever to | D．so clever that |
Tigers wait ______ it is dark, then they go out to find their food.
| A．though | B．as | C．because | D．until |
The woman became famous ______ the new song.
| A．because | B．when |
| C．because of | D．as long as |