loadingⅠ.1.D 2．C 3．D 4．B 5.A 6.A 7．D 8．C 9.B 10.A 11.D 12．C 13．B 14.A 15.C Ⅱ.A 16—18 BCA B 19—22 CDAC
C 23．D 24．D 25．B 26．A Ⅲ.A.27.couple 28.burning 29.address 30．meeting 31.task B. 32.business 33.alone 34．manage 35.unhappy 36．Actually 37.worried 38．unable 39.wakes 40．rings 41.still
Ⅳ.42.away 43.really 44.myself 45．to lock 46.nothing 47.But 48．was watching 49.to do 50．what 51.as
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