单选题 The chair ______ you are sitting is made of wood.
  • A) that
  • B) which
  • C) what
  • D) on which


【正确答案】 D
【答案解析】[解析] sit为不及物动词，其与宾语chair之间要用介词on连接。介词后的定语从句要用which引导，而不用that。