Giúp vs ạ:::::::::::::::::::::::: Chuyển các câu sau sang thể phủ định và nghi vấn 1. There were many people at the party. (-) ……………………………………………………………… (?) ……………………………………………………………… 2. They arrived at home 3 hours ago. (-) ……………………………………………………………… (?) ……………………………………………………………… 3. He was very happy to attend the wedding party. (-) ……………………………………………………………… (?) ……………………………………………………………… 4. Mr Robinson invented the photograph in 1890 (-) ……………………………………………………………… (?) ……………………………………………………………… 5. She could swim when she was only 9. (-) ……………………………………………………………… (?) ……………………………………………………………

1. There were many people at the party.

(-) There were not many people at the party.

(?) Were there many people at the party?

2. They arrived at home 3 hours ago.

(-) They didn't arrive at home 3 hours ago.

(?) Did they arrive at home 3 hours ago?

3.  He was very happy to attend the wedding party.

(-) He was not very happy to attend the wedding party.

(+) Was he very happy to attend the wedding party?

4.  Mr Robinson invented the photograph in 1890.

(-) Mr Robinson didn't invent the photograph in 1890.

(?) Did Mr Robinson invent the photograph in 1890?

5. She could swim when she was only 9.

(-) She couldn't swim when she was only 9.

(?) Could she swim when she was only 9?