问题补充:
----- Mary looks very upset. She failed to pass the exam.
----- I guess so. Its very difficult after all.
A must have B could have C should have D might have
答案:
解析:本题考查情态动词的用法。句意:玛丽看起来很沮丧。她一定没有通过考试。must have done过去一定做过某事。
时间:2019-01-05 16:39:48
----- Mary looks very upset. She failed to pass the exam.
----- I guess so. Its very difficult after all.
A must have B could have C should have D might have
解析:本题考查情态动词的用法。句意:玛丽看起来很沮丧。她一定没有通过考试。must have done过去一定做过某事。