I can’t remember _______ you started doing the work
A.that it was whenB.when it was thatC.when was it thatD.that was it when在线课程B
试题分析：考查特殊疑问句的强调句做宾语从句：特殊疑问句的强调句结构是：疑问代词或副词+ is/was+ it +that+其它成分。因为在句中做宾语从句，只需将is/was 放it后即可，句意：我不太记得你是什么时候开始工作的。选B。
考点：考查特殊疑问句的强调句做宾语从句