------ English has a large vocabulary, hasn’t it?
------Yes. more words and expressions and you will find it easier to read and municate.
A. To know
B. Knowing
C. Know
D. Known
网友回答
A. To know
B. Knowing
(答案→)C. Know
D. Known
解析：考查动词形式。祈使句 + and + 陈述句，故用动词原形。句意：——英语有很大的词汇，是不是？——是的，知道更多的单词和词句，你就会发现读和交流更容易。