David said that it was his strong interest in literature he chose the course.A. because of

问题补充：

David said that it was his strong interest in literature he chose the course.

A. because of; that

B. because; so

C. because; that

D. why; because

答案：

(答案→)A. because of; that

B. because; so

C. because; that

D. why; because

解析：考查强调句：强调句的结构是：It is/was+强调部分+that+其余部分…，这里强调的是原因，his strong interest是名词，第一空用because of，去掉强调结构这句话还是可以成立，所以是强调句，第二空填that，David说因为他对文学非常有兴趣他选了那个课程。选A。