When I____(come)into the room,he____(not see)me,for he ____(read)something.

问题描述:

When I____(come)into the room,he____(not see)me,for he ____(read)something.

When I__came__(come)into the room,he_didn't see___(not see)me,for he __was reading__(read)something.
整句话应该是过去时态.