He came to my class every week, but his attitude ______ he was not really interested in the subject.
A.expressedB.describedC.explainedD.suggested在线课程D
句意为“虽然他每周都来上我的课，但他的态度暗示他对这门功课不感兴趣”。express“表示”；explain“解释”；describe“描绘”，均不符合语境。