Write the second sentence so that it has the same meaning to the first on

1.write the second sentence so that it has the same meaning to the first one.
1.my father finds playing board games interesting
-my father is..................................................................
2.he hasn't smoked cigarettes for a month.
-the last time............................................................
3.that apartment is more mordern than any apartments.
-that apartment...............................................................
4.there are over two hundred stamps in Nam's collection.
-nam's collection.............................................................................
5. I spend twenty minutes walking to school every morning.
-it takes...........................................................................
6.I find losing weight very difficult.
-it's.........................................................................