69．You are _________ to return the book to your friend this morning．

68．You can't _________ how l was surprised when the UFO landed in front of me．

67．Last year his mother _________ him a lot of gifts for his birthday．

66．Your father is right．You mustn't be rude and you shouldn't _________ with him．

65．That may happened _________ of years ago．

64．Zhai Zhigang，Liu Boming and Jing Haipeng are all regarded as _________ by all the Chinese people in 2008．

63．There _________ a great party in our school next Saturday evening．

62．The boy can dress _________ though he is only 4 years old．

61．Now school children have _________ homework and more free time than before．

60．“How long have you been _________(teach)in China?” “For two years．”