they couldn't have done better是什么意思

they couldn't have done better是什么意思 They must have been enjoying themselves there,or they _____ so long.[A] can't have stayed [B]wouldn't have stayed [C] needn't have stayed [D] couldn't stay为什么选B?清翻译整句 can’t / couldn’t have They found there wasn't anyone at the entrance so they [ ] proof of their ages .A,didn't need to show B,needn't have shown C,couldn't show D,musn't shown 1.everyone can have a piece of meat,( A.couldn’s everyone B.can't they C.can't it D.can't she1.everyone can have a piece of meat,( A.couldn’s everyone B.can't they C.can't it D.can't she2——.Is this your son's sweater?——NO.（）is on the couldn't have done和couldn't do的区别 they have got _____ little help that they couldn't solve ____ little problems.so,such 怎么选择,为什么 They( )be polite to their parents.A should B may C maybe D couldn’t They couldn't agree with each other the movie bored me to death.Iwish I______to it.a.hadn't gone b.didn't go c.couldn't have gone d.couldn't go My friend lent me some money otherwise I__the train ticket yesterdayAdon't afford B didn't afford C couldn''t afford D couldn''t have afford they stared only five minutes ago.they ________that far请问 A might not goB shouldn't goC couldn't have goneD ought not to have gone None of them could afford to buy the house,____?反义疑问句A:could they B:couldn't they C:didn't they D:did they His parents used to play Maijiang in their spare time,_____?A)did they B)couldn't they C)usedn't they D)usedn't he When they heard the bad news,they couldn`t help ____ .a.cry b.cries c.crying d.cried理由? They looked in the garden.But they couldn't ____the child.A.look B.look at C.see D.find 英语翻译A couldn't die B would have died C died D had died 英语翻译He was punished.he _____the red light.a.couldn't have jumped b.shouldn't have jumpedc.mustn't have jumped d.ought to not have jumped