Yes, when using the present perfect tense.
John and Mary, I am going to town, do you want to come too?
Yes its correct to write, "i am in attendance at....."
The phrase "write to me something" is not grammatically correct. It should be either "write something to me" or "write me something."
is correct write "in the listening parts" or "on the listening parts"
The correct form is When did I come? (I did come when).
The correct way to write it is ' 120 '.The correct way to say it is "One hundred twenty".
Has shown is correct.
Has shown is correct.
You learn to spell and write.
The correct way to write fireplace is as one word - "fireplace."
Yes that is correct. (An easy way of remembering the difference is that you use 'too' when you want to say 'also'. e.g. 'Would you like to come too?')
Yes, it is grammatically correct to say "Write this in your copy." You may be trying to say "Write this on your copy," but both work.