89.　 He was___help me at the moment.

　 (A) too busy to 　 (B) enough busy to　 (C) very busy to　 (D) busy enough to

88.　 Edison　 　 scientific experiments

　　　 (A) interested to　　　 (B) was interested in　　　 (C)　 is interesting　　　 (D) was interesting in

87.　 English is not too difficult____ .

　　　 (A) for learning　　　　 (B) learn　 　 (C)　 to learn (D) learning

86.　 Tim sat near the fire ___ warm. (A)　　　 for to get　　　 (B) for get　 (C)　 to get　　 (D) for getting

85.　 Is it necessary ___ the book immediately?

　　 (A) for him to return　 (B) that he returns (C) his returning (D) to him return

84.　 I wanted___your friend, but my car broke down on　　　 the　 way. (A)　　　 meet　　　 (B) meeting (C)　 to meeting (D) to meet

83.　 You must pay attention to ___ the works of Lu Xu. 　　　 (A) read　　　 (B) reading　　　 (C)　 reader　 (D) be read

82.　 My watch is broken.　 I must have it____.

　　　 (A) repairing　　　 　 (B) to be repaired (C)　 to be repairing　 (D) repaired

81.　 He　　　 came ____.

　　　 (A) drunk home last night (B)home last night drunk(C)　 home drunk last night(D)　　 last night home drunk

80.　 The paddyfield machines　 ___ by this factory are small in size.

　　　 (A) produced　 (B) producing　　 (C)　 to produce　 (D) are produced