Some scientists think that it may take ______years to make robots look like people, and do the same things as us.
| A．hundreds of | B．two hundreds of |
| C．two hundreds | D．two hundred of |
--______ interesting the storybook is!
--Yes. I have read it twice.
| A．What | B．What an | C．How | D．How an |
Each year quite a lot of food ______ around the world. It’s really time for us to do something.
| A．was wasted | B．is wasted |
| C．wasted | D．will be wasted |
Everyone except Tom and John ____ there when the meeting began.
| A．are | B．is | C．were | D．was |
—May I smoke here?
—No, you ______. This is a no-smoking room.
| A．needn’t | B．mustn’t | C．couldn’t | D．wouldn’t |
People who eat breakfast are always in ________ spirits than those who don’t.
| A．good | B．nice | C．better | D．best |