There is “u” and “s” in the word “bus”.A. a a B. a anC. an an D. an a

问题补充：

There is “u” and “s” in the word “bus”.

A. a, a

B. a, an

C. an, an

D. an, a

答案：

A. a, a

(答案→)B. a, an

C. an, an

D. an, a

解析：句意：在单词“bus”当中有一个u和一个s。u词首音素是辅音，故固定冠词用a，s词首音素是元音，故不定冠词，用an。选B。