--- Can we leave the classroom now?-- No, you ______. You ______ to leave until the bell rings.
--- Would you like to go to the concert with me? --- I’d love to. But I’m a little tired. I prefer at home rather thanout.
--- Jenny, you have got the first prize in the competition. Congratulations. --- .
--- Mr. Wang’s never been to Canada, has he? --- . He went there on business last week.
--- will your mother come back? --- In two days.
---Let’s go fishing if it this weekend. --- But nobody knows if it .