At ______, photography is a chemical process, during which a light-sensitive material is altered when exposed to light.

Nancy was surprised that they have（），They seemed to be a happy couple.

What actually __________ a good angle — or a good selfie overall — is rooted in what we consider beautiful.

The compositions contained so few errors that the teacher got the students _____ one another ’s papers.

Josephwasverylucky____withhislife;healmostdidnotgetoutoftheroom.