________alarmclockand________penare

发布时间:2020-07-26 16:33:32

________alarm clock and ________pen are on the puter desk.A.An, aB.A, anC.A, aD.An, an

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A解析解析:alarm以元音音素开头,故应与不定冠词an连用,pen以辅音音素开头,故应与不定冠词a连用。
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