Вставить пропущенные : have,was,were " ever been to the kremlin? "- of course, .we there last sunday" "my little sister not been to the zoo yet." " little sister not been there? "- "yes,he .he at the zoo last week- end.but i not been there for ages.let(на верху запятая)s all go together.it(запятая)s worth visiting in may" they already been to the museum.they there last month.

Нужно просто определить какого числа существительное, стоящее перед глаголом was/were.

1)was.2)were.3)were, was.4)was.5)was.6)were.

Have you ever been to the Kremlin? - Of course,we have .We were there last Sunday"
"My little sister has not been to the zoo yet."
"your little sister has not been there?"- "Yes,she hasn't .She 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"
They have. already been to the museum.They were there last month.