Question

____ old man behind Mary is _____ university teacher.

A．An, an

B．The , a

C．A , the

D．The , an

Answer 1

B

试题分析：句意：在玛丽身后的老人是大学的老师。old man被介词短语behind Mary修饰，该用定冠词。university teacher表示一类人，该用不定冠词。另外university是以辅音音素开头的单词。所以选B。