Which is correct? I always knew that in such sentences as "He/She was right" always used past simple but recently I saw on internet a sentence "Susan had been right", I thought why author used past perfect form? Anyway it also can be "he/she has been right". Can you please explain when I should use "was", when "has been" and when "had been"? i am confused.

Which is correct? And what is the difference between them? I knew that the correct one is "It has been cold (recently/these days)". We are talking about condition. But recently I saw a sentence "It has been cold days". Do you think it is correct to say?

Do you find this sentence correct or not? I wrote down the words, that I want to learn, in the vocabulary. or maybe you think that this one is more correct: I wrote down the words, which I want to learn, in the vocabulary.

Is it correct? I wonder if everybody have finished the test?

About uppercase letter I don't actually understand in which cases I should put an uppercase letter. For example: Last week I attended a lesson about Biology (or biology) at our University (or university). Explain to me, please, how it is better to write?

Which answer is correct? 「私は今大好きな映画を見ている」 How to ask "Which movie is that? in 普通形? １．「どんな映画だの？」 ２．「どちらの映画だの？」 ３．「映画何だろう？」 ４．「映画何だの？」

How it is more correct to say? I always try to say "write to me". But I saw people who are used to to write like "If you want to talk with me, don't hesitate and write me". Those people said that they know English at Advanced level and this is correct to say "write me", but they also said that "write to me" is not a mistake as well. The same situation with "message me" and "message to me", I saw a profile of one person, he wrote "If you have have questions about English grammar, message me, I can help.". Is that correct to say in that way?I wrote "I want to talk with you, please write to me!" That was grammatically incorrect??

Politness. What is the most polite way way to say "ご機嫌いかがですか"or "お元気ですか"?