Вкаком случае пишется "was" а в каком "were" ?

Was-ед.ч.,1,2 лицо were-мн.ч.,3 лицо

Was когда я ты он она единственое число were когда множественое число

1. mother told molly not to play with scissors. 2. the policeman asked him to show his driving license. 3. lucy told mary that she has seen a ufo yesterday. 4. the child asked his mom what they would have for dinner. 5. the teacher told us that the water boils at 100 degrees above zero. 6. john asked his wife if the baby was asleep or awake. 7. little boy threatened us that his brother could beat any of the boys there. 8. father told us that the postman hadn't come yet. 9. the old man asked the boy if he understood what he said. 10. the boy told us that his sister would get her diploma the following month if she passed her exams.

1mother tells molly not to plaу with the scissors.2. the policeman asksme to show him my driving license.3. lucy says to mary that she saw a ufo yesterday.4. the child says, what shall we have for dinner, моm?   5. the teacher says that water boils at 100 degrees above zero.6. john askes his wife if the baby is asleep or awake.7. little bob savs that his brother can beat any of the bovs there.8. father says that he is afraid the postman hasn't come yet.9. the old man asks the boy if he understands what he says. and the boy answers in the negative.10. the boy says that his sister will get her diploma next month if she passes her exams.