No matter how bright a talker you are, there are times when it's better _____ silent.A. remainB. be remainingC. having remained D. to remain希望老师分析的越详细越好，知识点分析的越多越好，充分的分析整个句子。谢谢老师啦！
...he
children praised her warmly for her good behavior. As a matter of fact, there
was no great merit in this, for she could not stand anything stronger than
milk; but we are seldom rewarded when by rights we
ought tobe and sometimes are when we have not deserved it.这里的大意是动物们都喝...
原句：1) There was only one wreckage and smoke and fire where the World Trade Center used tobe.请问老师，原句中 where the World Trade Center used tobe 是地点状语从句，可否在 where 前添加 in the place 使 where the World Trade Center used tobe 变为定语从句，从而...
Oh, look. On the canopy above
there are capuchin monkeys racing across the branches and a troupe of
squirrel monkeys, also feasting on ants.—SPOK: CBS_SixtyII，2005 (20050202)，60 MINUTES WEDNESDAY, CBS已知上述文本中有加粗单词“above”和“there”，对于二者究竟是应该被...
老师说 badly 表示程度时，相当于 very much，只用于修饰 need, want, in need of 表示“需要”的动词或介词短语。如：He needs the money really badly.They are badly in need of help.Why do you want to go so badly?“只用于”修饰表示“需要”的动词，那其他...
...ould则可用于各种句型。如：He
can’t [couldn’t] have seen her there. 他不可能在那儿见到她。The
boy could have gone home. 这男孩可能已回家了。注：could后接动词完成式，除表示推测外，还有一些其他的用法，请参见后面的有关内容。(3)
ca...
...me of them may even be able to help
parents with their online work!However,there are some worries about how the technology influences childhood
development. We are walking into an
unknown area as the generations past have never had this same kind of
experience like them. Nowadays,almost every home h...
...r for ecotourism because of its unique biodiversity. ___69___ (activity) there range from whale
watching to hiking (远足) and accommodations aim ___70___ (have) a low
impact on the natural environment.【材料来源】▲材料来源（网址稿）：https://www.thoughtco.com/what-is-ecotourism...
....22-cal. pistol slug crashing into his face. Somehow he survived, although there are still buzzing fragments in his head, causing dizziness and permanent deafness in his left ear. Almost as painful is the suspicion that he may well have been set up for the shooting by other policemen. For Serpico, 3...
...ch as possible from the wreck.Nothing of value was found, but the numerous items which were brought to the surface proved tobe of great interest.这里为什么不是which had been brought to the surface，如果不能，怎么辨别什么时候用过去完成式还是用过去式？
1.There are many unpredictable factors in business world that large companies which used to empoly thousands of people are likely to go bankrupt .2.there are so many unpredictable factors in the world of the work that the employers have to downsize the workforce请问这是什么句子
...n focus of this craze in the media was the parents trying to purchase this item for their children, leading to numerous fights and riots between customers when supplies ran low. 请问老师们：the parents trying to purchase this item 是动名词复合结构作表语吗？其次，leading to...