(20分!!)reported speech

1.''Which book have you read recently?''the teacher said.
My teacher asked me which book I had read recently.

2.''Did your brother return home early last night?''he said to me.
He asked me if my brother had returned home early last night.

3.''Why were you absent this morning?''the teacher asked Ada.
The teacher asked Ada why she had been absent that morning.

1.
The teacher asked which book I had read recently.
2.
He asked me if my brother returned home early the previous night.
3.
The teacher asked Ada why she were absent that morning.

2007-05-21 22:32:15 補充：
上面兩位第2都用左last..

1) The teacher asked which book I had read recently.
2) He asked me whether my brother returned early last night.
3) The teacher asked Ada why she was absent that morning.