КОгда ставятся was were have had

was/were - формы глагола BE (быть) во временах Pastкогда говоришь я, он, она, оно - was (I was friendly, he was friendly, she was friendly, it was friendly)когда говоришь они, мы, вы, ты - were (They were frienly, we were friendly, you were friendly)

Have,  Had - иметь. Have употребляется с I , You, We, They, значит с местоимениями 1-го и 2-го лица. Например: I have a car. ( У меня есть машина)

Had - иметь в прошедшем времени. Употребляется со всеми местоимениями. Например: He had a book (У него была книга), I had a bike ( У меня был велосипед)