Frank studied English language in London for four years, so he gets good knowledge of Lon

Frank studied English language in London for four years, so he gets good knowledge of London.
A. a; the
B. / ; /
C. / ; a
D. the; a

A. a; the B. / ; / C. / ; a(答案→)D. the; a解析：考查冠词的用法。第一空，语言language前必须加the，第二空为短语： have /get a knowledge of 精通，了解，句意：佛兰克在伦敦学习了四年的英语语言，因此他非常了解伦敦。所以选D。

正好我需要