Before paper was invented, people wrote on ______could obtain: silk, palm leaves

游客2024-01-02 9

问题 Before paper was invented, people wrote on ______could obtain: silk, palm leaves, or clay tablets.

选项 A、what
B、whatever
C、whatever they
D、they

答案 C

解析 The preposition on needs a noun structure as its object; whatever they is the beginning of a noun clause.

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