Tea wasn't introduced into Europe until the early 17th century. And now it has _______ popular in Europe and America.这道题给的答案是become，请问可不可以用been呢？如果不行，为什么呢？
...句子的句子成分，as的用法和分号的作用。What they offered was classic French-restaurant cuisine, short menus cooked fresh à la minute（法语“非常快”）; not, as was the custom even in high-class British restaurants then, dishes reheated from frozen or cooked far in adv...
This is not because a person arrives his natural limit of efficiency when he reaches the sixth grade,for it hasbeen shown again and again that with special tuition so many older children,and also adults,can make enormous improvement.
...网站上看到一句又怎么解释：Each branch（of the governmet） has its own responsibilities and at the same time, the three branches work together to make the country run smoothly and to assure that the rights of citizens are not ignored or disallowed.
...say plainly, “watch
out for the baobabs!”My friends, like myself, have been skirting this
danger for a long time, withoutever knowing it; and so it is for them that I have
worked so hard over thisdrawing. The lesson which I pass on by this means
is worth all the trouble it has
cost me.Perhaps yo...
...忙分析一下下面这个句子的语法结构。Prior to him, all that was known of electricity and magnetism was what the ancients knew, nothing more than that the lodestone possessed magnetic properties and that amber and jet, when rubbed, would attract bits of paper or other substances of smal...
...research can reasonably support, the overall
effects of the publicity have been more beneficial than harmful. The most
positive aspect of this popularization is a new and much-needed emphasis (重视) on emotion by employers,
educators and others interested in promoting social well-being. The
popula...
...ar singer.= It is said that she was a popular singer.= She is said to have been a popular singer.据说她是位受欢迎的歌手。（摘自《英汉多功能词典》新编升级版p.1489） They say that he is like a saint. = It is said that he is like a saint. = He is said to be like a saint...
...ional community's expectation for us. The international community also has the same expectation for us.另外有两个小问题: 1. 对..的期望, 介词用on？for？字典里只能查到期望...用of啊。2. expectation柯林斯字典里说是不可数可数两种用法都有 但是为...
...问题想请教一下。1. I managed to get through
the game and the pain was worth it in the end.请问was worth it是不是错了，主系表应该是was worth。那这个it又代表什么呢？2. His first book to be
published next month is based on a true story.其中be based on是动词短语...
... claims that he didn’t have anything to do with the
accident. [= that he was not involved in the accident.] 他声称自己与这场事故无关。（同上）He claims he wasn’t involved , but I
know he had something to do with it. 他声称自己与此事没有瓜葛，但我知道有些关联...
... homework_____ by then.答案给的是 will be finished，请问选hasbeen finished 为什么不可以？我以前在网上看到这样一种说法：在条件和时间状语从句中，用现在完成时代替将来时。例如这个链接中的https://www.cpsenglish.com/question/4742
...It sounds like a baby
crying.这句话，我有2个疑问：1)
The cat hasbeen miaowing at lot at night recently - 改成这样才更合理？2)
It sounds like a baby crying. - 介词like后面应该是一个名词性质的词组，所以如何理解这里的a baby
crying - 语法分析？