Сomplete the sentences with have, has, was and were. 1)... you ever been to the Kremlin? - Of course we ... .We ... there

1) Have you ever been to the Kremlin? - Of course we have. We were there last Sunday. 2) My little sister has not been to the zoo yet. Has your little brother been there? - Yes, he has. He was at the zoo last weekend. But I have not been there for ages. Let\'s all go together. It\'s worth visiting in May. 3) They have already been to the museum. They were there last month.