looked so tired this morning.He（ ）late last night.A.must stay upB.must have stayed upC.was staying upD.has stayed up选哪个呢?可以选A吗?为什么?

I'm so tired of this life. looked so tired this morning.He（ ）late last night.A.must stay upB.must have stayed upC.was staying upD.has stayed up选哪个呢?可以选A吗?为什么? tired,so So tired~ 英语改错题答案,共十处错误My classmates Liu Hua looks tired this week.This morning,I ask him if he had trouble in fall asleep.He said no and explained how he looked tired.I want to do well in my studies,so I have been stayed up these days 同义句 Do you know whose computer this isDo you know whose computer this is?（改为同义句）Do you know ______the computer_______ He looked so tired as if he had________all his strength?(use up)这里是填used 第一个是每空一词的啊 He looked so 急用. so tired for moving Catch cold so tired “So tired of feeling So tired Please waiting i think this work is so tired that i can’t stand it.这句话对吗 I feel so tired and helpless,maybe this is the true life! Yeah.But I'm so busy during this time and I feel so tired really中文怎么说 _______ in this way,the situation doesn’t seen so disappointing.A.To look B.Looking at C.Looked at D.To be looked at A.To look at B.Looking at C.Looked at D.To be looked at8.___ in this way,the situation doesn't seem so disappointing. .()at in this way ,the present situation about birds flu doesn't seem so disappointing为什么选looked , i am so tired 意思