1 . 单句改错
1. It has been announced that candidates may remain in their seats until all the papers have been collected.
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2. When I read the story last night, I wouldn’t help thinking of my days in the countryside.
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3. You should be tired after the long trip, aren’t you?
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4. Tom, you needn’t leave all your clothes on the floor like this!
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5. You can’t imagine that a well-educated gentleman might make such a silly mistake.
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6. —Must I pass the book on to Mary when I finish it?
—No, you can’t.
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