– May I go to the movies tonight, mum?
-- You can when you ____ your homework.
| A．will finish | B．are finishing | C．will have finished | D．have finished |
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 |
Fortunately, the bullet narrowly missed the president ________ an inch.
| A．by | B．at | C．to | D．from |