He didn’t listen to the teacher carefully. he couldn’t answer those questions.A. Even tho

问题补充：

He didn’t listen to the teacher carefully., he couldn’t answer those questions.

A. Even though

B. Instead

C. As a result

D. In order to

答案：

A. Even though

B. Instead

(答案→)C. As a result

D. In order to

解析：根据前后句子之间的关系，可知答案为C，表示因果关系。