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- do: I / you / we / they does: he / she / it I do shopping every week. He does shopping every week. = The simple present tense (Habits) - was: I / he / she / it were: you / we / they He was only 10 years old when his father died. I was angry because they were late. = past events. The past of 'be' (am/is/are) is 'was' / 'were'

Depending on the subject of the sentence, you would use a different one. First person: was, do (ie. I was still sleeping when you called. I do have your book.) Second person: were, do (ie. You were right in this case. You do have a good sense of direction) Third person singular: was, does (ie. My cat was sick from eating so much food. It does that from time to time.) Third person plural: were, do (ie. Those fire jugglers were amazing. They do jobs at small birthday parties, too.)

DO: this is a verb used for the first person singular and plural E.g: I DO, WE DO and second person singular and plural, e.g YOU DO. it is also used for the third person plural e.g THEY DO. DOES: in this case, it used for the third person singular e.g. HE DOES, SHE DOES. EXAMPLES I DO MY HOUSE KEEPING ON SATURDAYS WE DO OUR WORK ESSENTIALS TOGETHER THEY COULD DO QUARRYING THIS MONTH HE DOES HIS HOME WORK LATE AT NIGHT SABRINA DOES HER LAUNDRY ON FRIDAYS

никакой из этих ответов меня не устраивает, всё это я и так знаю