—Did Alan enjoy seeing his old friends yesterday?—Yes, he did. He __________ his old friends for a long time.
I didn’t mean to break your vase—it was just ______.
He was breathing ______ after the relay race.
People are concerned about the quality of the air they ______.
She walked home by herself, ______ she knew that it was dangerous.
—Let's go Dutch for this supper, OK? —No,________this time, as a reward for all your help.