These tables and desks are all made of＿＿＿＿＿A. a woodB. some woodC. the woodD. wood

问题补充：

These tables and desks are all made of＿＿＿＿＿．

A. a wood

B. some wood

C. the wood

D. wood

答案：

A. a wood

B. some wood

C. the wood

(答案→)D. wood

解析：wood 指“木头”，为不可数名词，此处的 wood 指材料，是物质名词，不与 the 连用。