Viết lại câu sao cho nghĩa ko thay đổi.

1.I'm sure that you left the window open last night.

=>You must........

2.The sea was so rough that the ferry couldn't sail.

=>The rough sea........

3.Nam is sorry that his little sister isn't here with him now.

=>Nam wishes.......

4.Her voice is so beautiful that everyone admires it.

=>She.......

5.I'm sure that she is very upset.Her cat has just run away

=>She must.......