‘I’the first letter in the word‘irregular’ and there is‘u’and ‘l’in it.A. is a anB. am

问题补充：

‘I’the first letter in the word‘irregular’,and there is‘u’and ‘l’in it.

A. is, a, an

B. am, an, a

C. is, an, a

D. am, a, an

答案：

(答案→)A. is, a, an

B. am, an, a

C. is, an, a

D. am, a, an

解析：句意：‘I’是单词‘irregular’的第一个字母，并且有字母‘u’ 和‘l’在里面。主语是字母‘I’，所以用is。字母‘u’ 是辅音，前用a.字母‘l’是元音，前用an.故选A。