讲解两道英语单选Ever since picasso painting went on exhibit,there__large crowds at the musemevery day.1.is B has been C.have been D are逗号后面的句子在整个句子中作什么成分?还有这个是主谓一直是吧,have been 如果

讲解两道英语单选Ever since picasso painting went on exhibit,there__large crowds at the musemevery day.1.is B has been C.have been D are逗号后面的句子在整个句子中作什么成分?还有这个是主谓一直是吧,have been 如果 英语单选,求讲解 英语单选一道讲解________you are what you eat,you should eat healthily.为何空上填since而不是unless ever since在英语中怎么用法 ever since ever since和since then的意思相同,造句说明一下,如果不同讲解一下 ever since,ever after 三道高中英语单选.1、People around the world_________Christmas Tree ever since 1510.A、decoratedB、have decoratedC、have been decoratedD、have been decorating2、The small country_______since the 1880s.A、has come into existenceB、has b 求助几道英语单选+讲解1.—How about eight o'clock outside the cinema?—Taht____ me fine.A.fits B.meets C.satisfies D.suits2.Scientists say it may be five or six years____ it is possible to test this medicine on human patients.A.since B.aft 用never ever already yet for since填空 英语 英语单选题,请讲解一下 翻译：ever since then ever since then EVER SINCE THE WORLD EVER SINCE EVE怎么样 两道化学单选 大学英语1 一、单选题（共 20 道试题,共 100 分.）V1.She ____to Beijing.She will be back soon.A.wentB.has beenC.goesD.has gone满分：5 分2.John’s father ______ maths in this school ever since he graduated from Harvard University.A. 英语单选,如下图,看了答案解析还是不清楚,请讲解,谢谢