This is the first time I’ve never painted a mural over graffiti.

I have never______________________

Mr. Binh started recycling rubbish two years ago.

Mr. Binh has_______________________________________

 David failed the exam because of his laziness.

Because David ________

 They haven’t cleaned up the street for five months.

It’s_______________________________________

We have donated books and clothes for ten years.

We began ______________________