________ to collect Chinese stamps?

1. A.
   Did he used
2. B.
   Does he use
3. C.
   Did he use
4. D.
   Does he

I collect stamps, I collect tickets, _____.

I ________ collect stamps, but now I like it very much．

1. A.
   used to not
2. B.
   didn't use to
3. C.
   wasn't used to
4. D.
   used to

I collect stamps, I collect tickets, ______.

1. A.
   in fact
2. B.
   too
3. C.
   as well as
4. D.
   either