Lucy isgood girl. She often helps others.A. aB. anC. theD. /

问题补充：

Lucy isgood girl. She often helps others.

A. a

B. an

C. the

D. /

答案：

(答案→)A. a

B. an

C. the

D. /

解析：冠词的用法不定冠词表示泛指，指一类，a用在用于辅音音素开头的词前，an用于元音音素开头的词前，定冠词the用在名词前表特指。g的音标是/g/,故用冠词a。