John starts work ______ 10 o’clock every day.

Mark starts a blog(博客)and tries to keep _________ online diary in English．

1. A.
   an
2. B.
   a
3. C.
   the
4. D.
   /

Class starts ________ two minutes．

1. A.
   in
2. B.
   on
3. C.
   after
4. D.
   /

John starts work ______ 10 o’clock every day.

1. A.
   in
2. B.
   on
3. C.
   at
4. D.
   for