21.   The best thing about it is that it works.

22.   The best thing about it was the solitude.

23.   The best thing about them is their smell.

24.   The best thing about wraps is that anything goes.

25.   The best thing he does is play football with a spongy ball in the hall.

26.   The best thing I can do is stay in as good shape as possible.

27.   The best thing is to just ignore her.

28.   The best thing they could do was comb the hundreds of pubs in the area.

29.   The best thing to do is to apologize immediately.

30.   The best thing to do is to put down absorbent floor covering in those rooms.