Help me, please 1. I haven't got a good night sleep since September has come. Is this sentence correct? I doubt. 'september has come' 2. A friend of mine told my brother that it WAS/WOULD BE better to buy some warm clothes before the winter CAME/HAD COME. And explain why, please. I am stuck

Why present perfect? Copper and tin were used before iron: they melt at a lowe temperature, and can be mixed to form a useful metal called bronze. Iron was probably extracted from meteorites, perhaps around 3000 BC. (Iron ornaments dating from 5,000 years ago HAVE BEEN FOUND in the Middle East.) Later, iron was extracted from iron ore, around 2000 BC... Why have been found? Were found ---- wrong?

Keep on doing or keep doing So, which is correct? Please, explain if there's any difference. And how can I say that somebody continues doing something in other ways?

with every step or with each step ? what is correct? why?

synonyms for ebooks and paper books. and books at all I've found out that I use the word "books" too often in my essay. How can I say e-books in other way? And traditional, paper books? I tried to find something but there was nothing like that.

I doubt that everything is correct. you're kind of my favourite person, and I really love being around you and I find myself thinking about you all the time. I don't know when that happened or when you became so special. But you make me awfully happy and I am so glad you're alive.

difference between words probability and likelihood I tried to find articles about them in the internet but didn't really get the difference. Could you help me, please?