宾语从句的时态和语序

请大家看这道宾语从句题，正确答案是

—Could you tell me _____in ancient China? —It"s hard to say, but I know people once used tree leaves to make it. A. how was paper made B. what paper was made C. what was paper made D. how paper was made 【知识点】宾语从句的语序

答案D

【解析】句意：——你能告诉我在中国古代纸是如何制造的吗？——很难说，但是我知道人们曾用树叶造纸。宾语从句的语序是陈述语序，即：连接代词/副词+主语+谓语+其他成分。根据语序可排除A与C，又根据句意“纸是如何制造的”，所以选how。故选D。