听力里面的句子:And how strong is the evidence that climate change is happening that it's really something we need to be worried about?请问happening后面的that引导的是什么从句?
It’s worth remembering, however, that though a clean copy fresh off a printer may look terrible, it will read only as well as the thinking and writing that have gone into it.问一,粗体部分的语法结构。问二,为什么两个分句之间没有连词?
And last year Khan Academy and the College Board unveiled a free course they say boosts SAT scores for students at all income levels.这里的黑体部分是插入语吗,如果是为什么没有逗号呢?如果不是那是什么成分?