Mr. Black,We're very gladly to have received your money and some reading materials. Thank

Mr. Black,
We're very gladly to have received your money and some reading materials. Thank you very much. We had been studying hard since we came back to school. Under the help of our teachers and classmates, we have made great progresses in our studies. So we often praised and encouraged by our teachers and parents. We have made up our minds to study hard than before to learn every subject good in order to be admitted to key universities in the future.We're looking forward to see you, but we have no chance to go to the Hangzhou ourselves. So we hope you can post us a photo of yours soon.
Best wishes,
Yours, gladly--glad

(答案→)gladly--glad 解析：【小题1】gladly--glad 本次是句中的表语，通常用形容词做表语的形式。【小题2】had--have 本文是一一般现在时为主的时态。【小题3】under--with 固定词组with the help of…在…的帮助之下。【小题4】progresses--progress 名词progress进步是一个不可数名词，没有复数形式。【小题5】we后加are 本句是一个被动语态，指我们被表扬。【小题6】hard--harder 后面有than说明这里使用比较级的形式。【小题7】good--well 用副词well修饰动词learn every subject.【小题8】see--seeing 前面的to是介词，后面要接动名词doing的形式。【小题】去掉the Hangzhou是一个专有名词，要单独使用，不需要冠词修饰。【小题10】your—yours 这是一个双重所有格的结构，后面加名词性物主代词。

就是这个解释