A. what B. it ( )100.I' m ______ to trouble you. A. glad B. afraid
单项选择答案：
C. that C. fear
D. this D. sorry
(1-20): 1-5. CDBCC 6-10 ADCBA 11-15 DAABC 16-20 CADDB
(21-40): 21-25 BACDA 26-30 BDCBB 31-32 ABDDD 36-40 BABCC
(41-60)： 41-45 CCBAB 46-50 DBCBB 51-55 CDCDB 56-60 BABAB (61-80)： 61-65 BDDDC 66-70 CBBBB 71-75 AACBD 76-80 CCDAB (81-100)：81-85CDDBD 86-90 CCCAB 91-95 CDBAC 96-100 DABBD