5. You don't need ___ (do) the washing up. I ___ already (already / do) it. You shouldn't ___ (do) it.

Решение:

В данном случае используется конструкция 'need + to do' или 'need + doing' для обозначения необходимости действия. Также применяется 'shouldn't' для выражения совета или запрета.

1. You don't need to do the washing up.
2. I have already (already / do) it.
3. You shouldn't do it.

Ответ: to do; have; do.