—What’s the matter with Paul?—A letter from his parents in New Jersey _________ as attack of homesickness.
So tired __________ after walking such a long way that I ___________ stand.
Gun control is a subject __________ Americans have argued for a long time.
It is obvious to the students _________ they should get well prepared for their future.
John may phone tonight. I don’t want to go out _______ he phones.
You are required to write _______ so that we can see it clearly.