1. My father finds playing board games interesting.

→ My father is interested in playing board game.

2. He hasn't smoked cigarettes for a month.

→ The last time he smoked was a month ago.

3. That apartment is more modern than any apartments.

→ That apartment is the most modern.

4. There are over two hundred stamps in nam's collecition.

→ Nam's collecition has over two hundred stamps.

5. i spned twenty minutes walking to school every morning.

→ It takes me twenty minutes to walk to school every morning.

6. I find losing weight very difficult.

→ It's difficult for me to losing weight.