1.this is the first time I've ever painted a mural over graffiti.

I have never painted a mural over graffiti before.

2. Mr.Binh started recycling rubbish tow years ago.

Mr.Binh has recycled rubbish for 2 year.

3.David failed the exam because of his laziness.

Because David was lazy, he failed the exam.
4. The garden party won't take place if the weather doesn't emprove 
Unless the weather improves, the garden party won't take place.
5 I would like six apples (dozen)
==>I would like a half dozen of apple.
Câu 6 We haven't got any tomatoe (there)
==>There isn't any tomatoes left.