--Memorizing the words of pop songs one of the greatest ways to learn more English.
--Yes. And I’ve learned that way.
A. is, a lot of B. are, a lot of C. is, a lot D are, a lot
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解析：前文主语为一句话，抽闲事物后谓语动词一般用单数形式。A lot of 许多，用来修饰可数名词；a lot是副词，用来修饰动词，表示程度。结合语境可知选C。