My father is badly ill. We must send for a doctor at once.
--What if you don't finish your work on time? -- Mrs. Brown will be very angry.
--It is cold outside. You'd better wear warm clothes to the cold. --Ok, thanks.
Things made by hand are usually more expensive than _ produced in factories.
一 Have you finished your homework yet? -- No, not yet. I think it'll take me half an hour.
--Do you think students should be allowed to do their homework with music on? --. If so, they can't concentrate on the study.