题目内容
桪o you know who invented ________telephone？
桸o. But it is really ________most useful invention.
A. the; /
B. a; /
C. the; a
D. the; the
答案：C
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桪o you know who invented ________telephone？
桸o. But it is really ________most useful invention.
A. the; /
B. a; /
C. the; a
D. the; the
阅读快车系列答案