The speaker walked out of the hall, __ happily with the teacher, and ___ by a group of students.

1. A.
   talking, followed
2. B.
   to talk, followed
3. C.
   talking, to be followed
4. D.
   to be talking, to followed

The speaker walked out of the hall, __ happily with the teacher, and ___ by a group of students.

A. talking, followed   B. to talk, followed  C. talking, to be followed  D. to be talking, to followed