4 Which past simple questions need the word did? 0 Who wanted to climb the old tower? 1 Who you see on the plane? 2 Who you go on holiday with? 3 Who flew the plane? 4 Who you meet at the hotel? 5 Who found the bags? 6 Who spoke to the passengers?

Чтобы образовать вопрос в Past Simple, необходимо использовать вспомогательный глагол did, кроме случаев, когда вопрос задается к подлежащему (кто?).

1. Who did you see on the plane?
2. Who did you go on holiday with?
3. Who did you meet at the hotel?
4. Who did find the bags? - Who found the bags?
5. Who did speak to the passengers?

Ответ: 1, 2, 4, 6.