Question

PLZ HELP ME! The students began whispering and giggling once they saw the teacher close the book.
The adverb clause once they saw the teacher close the book modifies what?
A) the verb began.
B) the noun teacher.
C) the noun students.
D) the verbs whispering and giggling.

Answer 1

The answer is D because it tells when the students began whispering and giggling...

Answer 2

I believe the answer is A because a verb describes what the actions are