His flat is the floor in a building on a busy streetA. in, nine B. in, ninth C. on, nineD

发布时间：2020-08-21 05:46:09

His flat is     the     floor in a building on a busy street．
A. in, nine
B. in, ninth
C. on, nine
D. on, ninth

网友回答

A. in, nine
B. in, ninth
C. on, nine
(答案→)D. on, ninth
解析：住在几楼要用介词on,几楼要用序数词。
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