5. To make our city more beautiful, rubbish ______ into the river.
A. needn’t be thrown B. mustn’t be thrown
C. can’t throw D. may not throw
4. –May I go to the cinema, Mum? --Certainly. But you ______ be back by 11 o’clock.
A. can B. may C. must D. need
3. –Can you go swimming with us this afternoon?
--Sorry, I can’t. I _____ take care of my little sister at home because my mother is ill.
A. can B. may C. would D. have to
2. –Must I saty at home, Mum? --No, you ______.
A. needn’t B. mustn’t C. don’t D. may not
1. Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.
A. mustn’t B. may not C. can’t D. needn’t
49. More and more people began to _______ that good health means good wealth.
A. learn B. understand C. consider D. realize
48. Would you _______ your voice a little so that everyone can hear you?
A. rise B. put C. lift D. raise
47. He _______ in bed all day long because he had a headache.
A. lie B. lay C. laid D. lied
46. – Whom are you waiting for?
--Gary’s parents. But neither of them _______ yet.
A. arrived B. has arrived C. are arriving D. is arriving
45. –Your name again? I _______ quite catch it. –Bartholomew Liveli.
A. didn’t B. don’t C. couldn’t D. can’t