Facebook has become one of the most popular social websites. Its founder ___________when he started it years ago.
A could never imagine it B must have never imagined it
C must never imagine it D could have never imagined it
After we compare the two, we find this design is ________ that one.
| A．more superior to | B．far superior than | C．more superior than | D．far superior to |
More forests are being destroyed. As a result, a lot of good earth ________ each year.
| A．is being washed away | B．is washing away | C．are washing | D．are being washed away |
—Look! Isn’t that Peter’s sister?
—No, it ________ be her—I’m sure she doesn’t wear glasses.
| A．shouldn’t | B．oughtn’t | C．mustn’t | D．can’t |
________ excited us was that more than 100 miners trapped in the Wangjialin flooded coal mine were saved alive.
| A．It | B．What | C．As | D．Which |
Doctors warn people that one may develop skin cancer with his skin ________ to the sun too much.
| A．exposes | B．exposing | C．exposed | D．being exposed |