I still remember _______ to my home town whenI was young

It was not until I was injured in a car accident ______ the real American society．

Could you tell me ________— It’s twenty minutes by underground.

I’ve never read a better book than this one_____, it is the best one that I have ever read.[ ]

24. －Why haven’t you posted the letter?－I __________ to but I forgot about it.