Question

Mr Wang has worked as _______ English teacher for more than 10 years.

A．/

B．a

C．an

D．the

Answer 1

C

考查冠词。句意“王先生已经当了十几年的英语老师了。”泛指一个用不定冠词a/an，English首字母发音是元音，故用不定冠词an。故选C。