原帖由 annie66 于 2009-2-4 21:03 发表 3 P. I0 z& D/ J9 D2 V$ |/ T I'm sure you haven't had Class 7 yet. If you read learner's book, you will know the answer.
: F7 F8 [1 m8 C) y O$ r. z6 DI 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?