— Do you know why the teacher asks for me ? — He wants you to _____ your absence last night.
Today we have chatting rooms, text messaging and emailing, but we seem ______ the artof communicating face to face.
_____, he has a lot of knowledge about computer.
—I’m worried about the coming test!—______, you can do it!
_______ you don’t have much experience in this field, why don’t you ask ProfessorWang for advice?
—Shall we have a smoke here?—No, we _____ because this is gas station and the worker is carrying some petrol.