64. He’s crazy. He wastes so much valuable time __________(chat) on-line.

63. ------What did the doctor suggest?

　 ------　 _________ (work out) for an hour every day.

62. ------Where is Amy now?

　 ------She is now in hospital _________(recover) from liver failure.

61. My computer was _______(break) so I couldn’t read your two e-mails until toady.

60. There are ‘No Smoking’ signs everywhere in our school. Everyone is forbidden _________ (smoke) here.

59. I don’t think my mum missed ___________(talk) with me, but she did.

58. Mary told me the film is interesting and it worth _________(see).

57. In yesterday’s physics exam, John got better marks than _________(expect).

56. _________(ride) a bike helps you keep slim and stay healthy.

55. My friend asked me if I regretted _________(buy) the bike with 2,000 yuan.