--- He worked out such different questions at a very young age.--- Oh, he ______ a very smart student then.
—I’ll take at least 2 hours to do this!—Oh, _____!I could do it in 30 minutes.
Sorry to _____ you, but could I ask a quick question?—No problem.
—How long are you staying? —I don’t know. _____.
—Now,where is my purse?—_____!We’ll be late for the picnic.
—Let’s go and have a good drink tonight. —______ Have you got the first prize in the competition?