Question

The teacher tells her students, who promise they ______ quietly for three hours, that she won't give extra assignments.

Answer 1

Will sit........

Hope it helps..

Answer 2

I think this question requires us to complete the sentece or the clousr with the word that best fills the sentence

The best word should be will sit or maybe anothe clouse hence the sentence should read

The teacher tells her students ,who promise they will settle quetly for three hours that she wont give extra assignment

I hope this makes some sense