he is sad because he()not pass the exam.填did还是doesn't?
问题描述：
he is sad because he()not pass the exam.填did还是doesn't?
答
他伤心,是考试之后得之自己没有通过考试（不及格）之后才伤心的,所以不及格这个状态是在伤心之前,所以是过去时,选用didn't