—How much did this set of furniture cost?
—I forgot____.（ ）
- A.how much it costs
- B.how much did it cost
- C.how much it cost
- D.how much does it cost
正确答案及解析
正确答案
C
解析
句意：——这套家具花费了多少钱？——我忘记花费多少钱了。forgot后为宾语从句，宾语从句必须用陈述句语序。由forgot可知，宾语从句的谓语动词应为过去式形式，故选C。
