Despite official data showing the unemployment rate was 6 percent in April, up to 10 percent of people officially employed in China could actually be out of work，
今天看到一个英文句子：Writing a major academic work can be difficult
enough, but it is even more so when working in a foreign language. 我对其中的but有点疑问，but前后的语义并非转折关系，怎么用了but呢，难道它也可以表示递进的意义？还是这里的but...
And
it is providing to be an increasing powerful tool in encouraging people to
purchase. 这是北京高考真题阅读理解中的一句话，这里的 it is providing that是什么用法， providing在这里该怎么理解呢？
我查柯林斯英语词典，翻到单词joke，发现这个句子The project was taking so long that Stephen joked that it would never be finished.joke明显是不及物动词，后不接宾语或宾语从句。请问句中joked后面的that（粗体字）是什么从句？
2022全国甲卷的一道语法填空：________ friend of his, WuFan, volunteered to be his companion during
the trip.这道题填A，他的一位朋友，请问可以填one吗？为什么很多语法填空表示一个的时候都是填不定冠词，而不是one呢？感谢各位老师的解答！
They suggested that, where possible, asbestos-free materials should be employeed.Machine tools produce greater quantities of dust than hand tools and, where possible, the use of the latter was preferred.老师这两句话中的where possible是同样的用法吗，省略了什么？
It is hard work choosing the right words, but we shall be rewarded by the satisfaction that finding them brings.老师，请问这里that ，finding ，them，brings，分别做什么成分？
...dress in
part the extent to which documents from Harvard University should be made
public in an ongoing lawsuit that accuses the school of discriminating against
Asian-American applicants.想请刘老师解释下to which 在这里的用法，谢谢
...话：The blast was so powerful that street
signs and parking meters has been ripped from the ground。Pedesrains were lifted off their feet
and thrown across the sidewalk。我查词典里面lift
off有发射、起飞的意义，但好像用在这句话里不合适，请问这句话里的be
lifted ...