C1. If you do not behave, there would be trounle .

`\to` If you do behave , there wouldn't be trouble.

C2.I will be happy when this is finished.

`\to`I won't be happy ,when this isn't finished.

C3.I will definitely pay you back next week.

`\to`You will definitely be paid next week by me.

C4. In a situation like that, I would scream until somebody came to help me

`\to`Until someone comes to help me, I will scream in a situation like that.

Chúc bạn học tốt !! 🙆

@Katniss

 xin ctl hay nhất ạ :)))

1. If you do behave , there wouldn't be trouble

2.I won't be happy ,when this isn't finished.

3.You will definitely be paid next week by me.

4.Until someone comes to help me, I will scream in a situation like that.