He didn't ________ what I said because his mind was on something else.
Was it in this very room ____ he made up his mind ____ he should break away from his family?
Later they discovered, ____ was news to him, that Pamela was the headmaster’s daughter.
I shall always ____ your friendship greatly for friendship is more important than money.
The first textbooks written for teaching English as a foreign language ____ in the 16th century.
Readers can __quite well without knowing the exact meaning of each word.