原帖由 annie66 于 2009-2-4 21:03 发表 + }1 S) J( J8 y9 Z0 A( D$ R I'm sure you haven't had Class 7 yet. If you read learner's book, you will know the answer.
原帖由 Lois 于 2009-2-4 22:39 发表 1 @, J! p9 B/ K: A/ T8 J
you are wrong, and your friend is also wrong. g& ~. p2 H% c( X- `# ]5 Dit has always been 1 year.
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I read the learner's book 5 years ago, which said one year holding time of class 7 to class 5. Did you take the exam 6 years ago?