1. Louise sent to Helen a book.
2. The book arrived on Helen's birthday.
3. She got from her parents new watch and a printer.
4. She had a party in a night club.
5. Yes, namy friends came to Helen's perty.
6. Yes, they went to the restaurant.
7. Yes, they ate, drank and took lots of photographs there.
8. Helen's father came anf droved them home.
9. She will be in London.
10. She is going to go shopping and to go to the cinema.
<span>1) Betty Smith heard the noise of a</span><span><span> crying</span> child.
2) He entered the yard and smelt something burning.</span>
<span>The missing person was located by the private detective - Пропавший человек был найден частным детективом. Это предложение уже стоит в пассивном залоге.
Если нужно перевести в активный, то вот
The </span><span>private detective located the </span><span><span>missing person - Частный детектив нашел пропавшего человека.</span></span>
The Marx Brothers were English.