hold up 和held up有什麼区别?求详解 held up 是hold up 的过去式?还是分别的2个词组?

hold up 和held up有什麼区别?求详解 held up 是hold up 的过去式?还是分别的2个词组? hold off 和hold up 的区别 hold up Hold up hold up 和 hold off 的区别8.The express letter was ___________ for two days because of the bad weather.A.held up B.held outC.held off D.held in为什么不能用C 都有被拖延的意思啊 hold up 和 hold down有什么区别 hold up 和 hold back 的具体区别 hold up hold in hold off hold your head up hold up 短语意思 hold up to daily hold up等于什么 hold up the pick up hold up make up look up hold on ,hold up,hold to,hold out分别 hold down ,hold up ,hold back ,hold out的含义 The student_his hand to ask the teacher a question.A.have held up B.held upC.hold up D.holding up答案选的是D,为什么hlod要用进行时态, hold on to sth hold up to