50. Many of the stars because they are far away from us.
A. may not see B. can not be seen
C. mustn’t be seen D. needn’t see
49. Do you know ?
A. if it will be fine tomorrow B. where did they see her
C. when shall we have a picnic D. which would you like
48. -How long have you ?
-Since 1990.
A. bought the MP3 B. joined the Party
C. become a midfield player D. lived in the town
47. The sick woman is weak look after herself.
A. too; to B. so; that C. very; to D. so; to
46. Please don’t leave until your teacher back.
A. will come B. came C. comes D. is coming
45. The doctor asked my father to smoking to keep healthy.
A. open up B. give up C. put up D. make up
44. - will the foreign students be back from Qufu?
-In two days, I think.
A. How soon B. How often C. How far D. How fast