The teacher asked more _____ to prevent the students’ eyes from being injured.
Does the way you thought of ________ the water clean make any sense?
As a result of destroying the forests, a large ________ of desert ________ covered the land.
He worked late last night, ______, early this morning.
________ I met her, she was working only in a small factory.
He is seldom, ______, absent from school.