问题
选择题
— What's _____ most useful invention in the 20th century?
— _____ computer, I think. [ ]
A. the, A
B. a, A
C. the, The
D. /, The
答案
答案：C
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— What's _____ most useful invention in the 20th century?
— _____ computer, I think. [ ]
A. the, A
B. a, A
C. the, The
D. /, The
答案：C