This is key, and that is orange. A. a; a B. a; an C. an; an

发布时间:2020-08-21 12:54:11

This is      key, and that is      orange.
A. a; a               B. a; an         C. an; an          

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解析:key和orange都是可数名词,前者是辅音因素开头,后者是以元音因素开头,故选B。
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