一～四、单项选择。
1-5: BABBB
6-10: DCCBA
11-15: ADADB
16-20: BBBBA
21-25: ABBBA
26-30: ADABC
31-35: DCABB
36-40: BDAAA
41-45: CBACB
46-50: CAADB
51-55: ADACC
56-60: CCDCB
61-65: ADDDC
66-70: BCDAD
71-75: CDCAA
76-80: DBADC
81-85: CDCAA
86-90: DADDA
91-93: BCA
五、辨别改错。
94. A/went
95. B/turn off
96. D/were
97. B/(should) be assigned
98. D/have