You needn’t have ________ the speaker when he was speaking; there was enough time afterwards for you to ask questions.
—Excuse me! —________. —Could you tell me how I can get to the first department?
—Shall I lock the lab now before I go home? —________.I'll check it myself later.
—Can I ask you a rather personal question? —________
—I had a great time in the summer holidays.We went scuba-diving in Hawaii. —Wow!________
—Thank you very much for helping me with the luggage. —________.