You were - This is correct.
You were the best in the team.
Yes, it is grammar, but your spelling is wrong; it's spelt grammar.
Wrong grammar!
Wrong Grammar
yes
nothing ! because your wrong grammar !
Wrong spelling is the incorrect spelling of a word. Wrong grammar has a much broader meaning and can include using a word in the incorrect tense or sense, or inserting or omitting punctuation.
No, because your grammar is wrong. DID+QUALIFIED=IDIOTIC GRAMMAR
The word his can only be maid a grammar mistake if spelled wrong or capitalized
There is nothing wrong with "when will you come?"
Grammar is tricky. If you did not learn it as a child, the best way to learn it (and know whether your grammar is correct) is to find someone who speaks correct grammar and listen to them, a lot. NPR is a good place to listen to people who have good grammar.
Five seats, and your grammar is wrong
no, it's grammatically wrong