I have useful knife and my sister has eraser.A. a; anB. an; aC. a; aD. an; an

发布时间：2020-08-23 00:33:20

I have      useful knife and my sister has      eraser.
A. a; an
B. an; a
C. a; a
D. an; an

网友回答

(答案→)A. a; an
B. an; a
C. a; a
D. an; an
解析：useful词首音素是辅音，故不定冠词用a；eraser词首音素是元音，故不定冠词用an，选A。
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