问题描述：
peter is no longer a lazy boy
Peter is no longer a lazy boy____he used to be.
A.what B.whom C.when D.how
为什么选B?A错在哪里?
Peter is no longer a lazy boy____he used to be.
A.what B.whom C.when D.how
为什么选B?A错在哪里?
问题解答：
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