问题
选择题
The old man used to _____ in the country, but he is now used to _____ in the city. [ ]
A. live; live
B. living; living
C. live; living
D. living; live
答案
答案：C
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The old man used to _____ in the country, but he is now used to _____ in the city. [ ]
A. live; live
B. living; living
C. live; living
D. living; live
答案：C