He regretted the day ________ he wasted in the woods and ________ he should have studied.

1. A.
   when, when
2. B.
   that, when
3. C.
   when, that
4. D.
   that, that

John regretted ______ to the meeting last week.

A) not going                              B) not to go

C) not having been going                  D) not to be going

I regretted _________ a lecture made by proffessor. Wu.

A. missing     B.to       C. miss          D.missed

I regretted _________ a lecture made by proffessor. Wu.

A. missing     B.to       C. miss          D.missed

. He regretted______ to the lecture the day before.