Some scientists think that it may take_____ years to make robots walk

A. hundreds of B. two hundreds of C. two hundreds D. two hundred of

---There will be____air pollution if there are___ people driving.

--- I hope the air will be fresher soon.

A. less; less B. fewer ; fewer C. less ; fewer D. fewer ; less

---It's sunny. Why not go swimming with me?

--- _________!

A. Best wishes B. Sound great C. Bad luck D. You’re welcome

In western countries, women are always dressed ________white ________ their wedding day, because white is the colour of purity.

A. on ;on B. in ; in C. on; in D. in ; on

--- I got first place in the English competition again.

--- Peter! You are ______again.

A. giving off B. putting off C. taking off D. showing off

---Thanks for listening to my problem and giving me your advice, Sandy.

---_______. That’s what friends are for.

A. My pleasure B. With pleasure C. Never mind D. It’s nice of you.

The television programme series Mr. Bean is so interesting that we_______ praise it too much.

A. can’t B. shouldn’t C. mustn’t D. needn’t

I feel very worried when I can’t think of anyone______.

A. to talk B. talk to C. to talk to D. to talk to about

A country has dreams. We teenagers________ also have dreams. With dreams and hard work, anything amazing can be treated.

A. should B. must C. may D. can

Do you know when _____ World War Ⅱ______?

A. was; ended B. did; break out C. did; end D. /; broke out