I didn’t know .A. where does he liveB. where do he lives C. where he livesD. where he live

问题补充：

I didn’t know .

A. where does he live

B. where do he lives

C. where he lives

D. where he lived

答案：

A. where does he live

B. where do he lives

C. where he lives

(答案→)D. where he lived

解析：句意：我不知道他住在哪里。宾语从句中的语序用陈述语序，排除Ａ和Ｂ项；其时态取决于主句中的时态，主句中用一般过去时，所以宾语从句中的时态也应该是过去时的相应时态，故选D。