I didn’t know     &a Wap版

试题详情及答案解析

I didn’t know .

A．when would the bus arrive

B．what has been done

C．who left the message

D．where did he fix up the bike

答案：C

试题分析：句意：我不知道谁留了一张便条。这里是宾语从句，宾语从句的语序应该是陈述语序，所以排除AD；选项B应该用被动语态，故排除B；故选C。
考点：考查宾语从句。