Question

I lost________ key to the door yesterday.  It was________ unlucky day for me.

A．the; a

B．the; an

C．a; a

D．a; an

Answer 1

B

此题重点考查冠词的基本用法。不定冠词有a和an两种：a用于辅音音素开头的词前，an用于元音音素开头的词前。定冠词指双方都知道的人或事物。特指某（些）人或某（些）事物。