They are almost the same, little difference. Like saying, "Who is your English teacher?" and "Your English teacher is (whom)?". Hope this will help!

There's no problem understanding this short text. But from the perspective of a native Chinese speaker, I suppose a few fixes can be made to make it better, as below: 我的房子里有很多东西。厨房里的东西最多。我常常在这儿给全家人做家常饭。父母还说，我做的菜都很好吃。可我自己比较喜欢爸爸给我做的菜。他做的菜美味可口。对了，我本来想说的不是这些，而想说我的厨房里东西最多。比如，厨房里有几年前买的电冰箱，还有用过一年的微波炉，亲戚送给我们的电饭锅等等。总的来说，厨房电器都很齐全。除了这些东西以外，这儿还有各种厨具：碟子，大大小小的刀具，案板，煎锅，砂锅等等。我挺喜欢做蛋糕的，所以我有制作蛋糕需要的所有东西。厨房的窗户边放着一张圆形桌子，过节日的时候，桌子上会摆满各式各样的佳肴。 Enjoy your Chinese learning !

Almost right. Just a few corrections can be made to make it more native, as below: 莫斯科是俄罗斯的首都，位于俄罗斯欧洲部分的中心。在俄罗斯，莫斯科的人口是最多的，达一千两百万多。莫斯科是俄罗斯最重要的政治、经济与文化中心，也是著名的旅游中心。每年，莫斯科都会吸引许多来自世界各国的游客。莫斯科还有很多著名的地方：红场，克里姆林宫，普希金博物馆，国立历史博物馆，特列季亚科夫画廊等等。这里还有著名的莫斯科国立大学。莫斯科自2014年10月26日起全年采用UTC+3时区。 Enjoy your Chinese learning!

First of all, '对与' should be used here. It's not strange for foreigners to be confused with this kind of expression. I will try my best to explain it in a clear way. You should understand that ‘对于’ is a word in Chinese but '对与' is not an independent word. '对与' is composed of two independent words, '对' and '与'. 然后，再把一些对与杨家结亲有兴趣的单身男子的数据汇报给杨勇。 In this sentence, '与' means (to be married) with somebody. '对' means (to be interested) in something. Lack of either of these two will make the sentence incomplete.

I think there is no independent word like '过时间' in Chinese. Can you show the context where you find this word? '花时间' means to spend some time. Example as below: 做这件事情挺花时间的。（This stuff will take quite a long time.） Hope this will help!

Great! There will be no problem understanding you.  But some corrections can be made to make it more native.

As below:

你有没有秘密的事情？ 有的话，是什么呢？

你有没有秘密的事情？ 有的话，是什么呢？
我有。我的体重和私房钱。

你吃煎鸡蛋的时候往上浇什么？
我喜欢浇蛋黄酱。老公喜欢浇酱油。

Hope this will help!

And enjoy your Chinese learning!　中国語の勉強を楽しみにしてください！

你们在哪儿上你们的italki课？

你们在哪儿上你们的italki课？我的工作地点附近有一个公园，我经常在那里上课。我特别喜欢这个公园，小时候就经常在那儿玩。我会在上课前去那儿，找一个安静的地方，比如一个树荫下的椅子。塞上带有麦克风的耳机、准备好冷饮，然后等待老师。今天没有找到空着的椅子，只好坐在地上了。下课后，因为很长时间处于同样一种姿势，结果腿发麻了，很难站起来！:)

我特别喜欢在外面上课，你呢？ 

Your expressions are almost great. With my corrections, they can be more native. BTW,  there is no need to use '我' (I) too often. Chinese native speakers won't say that too often because people can judge who is the subject from the context. That's why I've removed some of them in your text.

Hope this will help!

Enjoy your Chinese learning!

All of them are measure words which can be paired with different classifications of nouns. For example, in English, you can say 1 glass of water, 1 cup of water or 1 bottle of water. Glass, cup and bottle are just like words that you mentioned here. I advise you not to figure out exact differences between them. All you need to do is just to remember those typical expressions with them when you come across during your study. There are just a few. And gradually you will know how to use them like a native. I will give you some typical examples below. '件'： 一件衣服（one suit），一件礼物（one gift），一件商品（a commodity） '把'： 一把雨伞（one umbrella），一把手枪（one pistol），一把铅笔（several pencils） '支'： 一支铅笔（one pencil）， 一支部队（one group of army），一支乐曲（one piece of music） Hope this will help! Enjoy your Chinese learning!