"sham Abraham" Is "sham Abraham" common expression in English? If there're other expressions which are similar to this, please let know them.

Which is the correct expression among two sentences, and Why? 1. I keep the windows open. 2. I keep the windows opened. I thought both can be used. But I have found in the dictionary that only No.1 can be used. And I have seen the sentence "I keep the windows closed." on a document. So I am confused with them and think both No.1,2 are correct again. Could you expain to me why only the word "open" should be used instead "opened" , by contrast, not the word "close" but the word "closed", the past participle of the verb "close" is used in other sentence.I'm sorry. I left out a word "of" in 7th line. instead-------→insteat ofinstead---------→instead of

I want to make friends with people from around the world. Whenever I travel abroad or recieve English documents, my ability is needed to improve than before. I hpoe that I can make friends with many people from around the world. I'm glad to be a member of itaki.