Question

— My son seldom has        breakfast.
— It is         unhealthy habit. You must ask him to change it.

A．/; an	B．the; an
C．/; a	D．the; a

Answer 1

A

试题分析：句意：--我的儿子很少吃早饭。--那是一个不健康的习惯，你必须请他改正。表示三餐前一般不用冠词，have+三餐；故排除BD；第二空因为habit是可数名词的单数，所以用不定冠词，表示类别，不表示特指，又因为unhealthy是以元音因素开头的单词，故用an;故选A。