－Is that Mary?
－No, it _______be her. She has gone to Tokyo.
| A．can’t | B．may | C．needn’t | D．mustn’t |
—Lucy hardly goes back to see her parents, _____________?
—__________. Instead, she chooses to write to them.
| A．doesn’t she; No | B．does she; Yes | C．doesn’t she; Yes | D．does she; No |
—hat do you think of genetically modified food (转基因食品)?
—We all think ______ is careless ______ some scientists to say it is safe before doing any experiment.
| A．that, for | B．it, for | C．it, of | D．that, of |
—Daddy, do you believe I can swim ______ to catch up with Ben!
—Great, dear! But I don’t have ______ to watch your match. I hope to hear your good news.
| A．fast enough, time enough | B．enough fast, enough time |
| C．enough fast, time enough | D．fast enough, enough time |
—_______ can I keep the books? —Two weeks.
A. How long B. How often C. How far
I have a _______. I will go to see a dentist.
A. stomachache B. headache C. toothache