Yesterday he sold out all his stamps at ( ) he thougut was a resonable price.A that B which C what D as
问题描述：
Yesterday he sold out all his stamps at ( ) he thougut was a resonable price.
A that B which C what D as
答
选C
因为只有what同时做at的宾语和定语从句的主语。
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答
选c,谢谢采纳