–Do you know who invented telephone? - No, but it is really most useful invention. A. th

发布时间：2020-08-16 08:58:28


–Do you know who invented      telephone?
- No, but it is really      most useful invention.
A. the; /
B. a; a
C. the; a
D. a; the

网友回答

A. the; /
B. a; a
(答案→)C. the; a
D. a; the
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