Question

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

A．/

B．a

C．an

D．the

Answer 1

C

考查冠詞。句意“王先生已經當了十幾年的英語老師了。”泛指一個用不定冠詞a/an，English首字母發音是元音，故用不定冠詞an。故選C。