Нужно составить вопросы к предложениям по английскому. Кому не трудно, пожалуйста

Question

Задание звучит так: "Составьте вопросы к предложениям, начиная словами в скобках". 
1. A visited my sister last summer (When) 
2. My mother worked at the hospital (Where) 
3. She took her child"s temperature (Did) 
4. We decided to stay in this hotel (Who) 
5. His wound was very bad (Was) 
6. They went to the disco after classes (Where) 
7. A nurse gave the first aid to an injured woman (What)

Виталя · Accepted Answer

1. A visited my sister last summer (When did you visit your sister?
2. My mother worked at the hospital (Where did your mother work?
3. She took her child"s temperature (Did she take her child"s temperature?
4. We decided to stay in this hotel (Who decided to stay in this hotel?
5. His wound was very bad (Was his wound very bad?
6. They went to the disco after classes (Where did they go after classes?
7. A nurse gave the first aid to an injured woman (What did a nurse give to an injured woman?

Дмитрий Сорокин · Answer

1. When did I visit my sister? 
2. Where did my mother work? 
3. Did she take her child's temperature? 
4. Who did decide to stay in this hotel? 
5. Was his wound very bad? 
6. Where did they go after classes? 
7. What did a nurse do?

Станислав Лебакин · Answer

When did I visit my sister? 
Where did my mother work? 
Did she take her child's temperature? 
Who did decide to stay in this hotel? 
Was his wound very bad? 
Where did they go after classes? 
What did a nurse give to an injured woman?

Максим Трофимов · Answer

When did I visit my sister? 
Where did my mother work? 
Did she take her child's temperature? 
Who did to decide to stay in this hotel? 
Was his wound very bad? 
Where did they go after classes? 
What did give a nurse to an injured woman?

Илона Александровна · Answer

1When did you visit my sister? 2Where did my mother work? 3Did shi take her child"s temperature? 4 Who decided to stay in this hospital? 5 Was his wound very bad? 6Where did they go after classes? 7What did a nurse give to an injured woman?

Марина Рогачёва · Answer

Все ответы хорошие, только вот все путаются с четвертым вопросом.. . 
Там должно быть 
Who decided to stay in this hotel. 
так как это вопрос к подлежащему, то есть вопросительное слово становится на его место, и потому вспомогательный глагол не нужен.