have lasted 和have been on区别

have lasted 和have been on区别 How long have the Olympic Games lasted? 36. New studies show that two of Saturns rings ______ longer than the 4.5 billion years since the birth of the Solar System. a. could have lasted b. should have lasted c. would have lasted d. must be lasting 句子什么意思?选哪个?为何?答 I still have ＄100,but what won't_______until the end of the vacation A last B be continued C continue D be lasted must be,must和have be,have的区别 改错题：these shoes are worn out ,they lasted a long time.怎么改呢,为什么?答案为have lasted have be to 和 have gone to 的区别? have to be和have to 啥区别? have和be动词的区别 用There be和have造句 have been done 和 to be done there be 和 have、has的区别! be动词能和have在一起吗 have和there be 的区别是? have keep 和be keep 的区别 have sth.to do和have sth.to be down和have sth.down是have sth.to do和have sth.to be down意思相同,还是have sth.to be down和have sth.down相同? 存在have been doing、have being doing、和have be doing吗? have got和have