#1
1 I don't know if she went out last night. Perhaps, she did.
2 I don't know if Robert left early. Perhaps, he did .
3 I don't know if Victor found his umbrella. Perhaps, he did.
4 I don't know if they bought a car. Perhaps, they did.
5 I don't know if the TV set cost a lot. Perhaps, it did.
6 I don't know if Mike sent a telegram. Perhaps, he did.
7 I don't know if Lucy knew him before. Perhaps, she did.
1 I have no idea where I put the vase.
2 I have no idea why Helen missed the lecture.
3 I have no idea what present chose.
4 I have no idea when he sent the letter.
5 I have no idea what language Mr Smith taught.
6 I have no idea how much Peter paid for his car.
7 I have no idea when Steve and Jill got married.
8 I have no idea what Jack told Peter.
9 I have no idea who brought the tape-recorder.
10 I have no idea where they drove at the weekend.
11 I have no idea why he didn’t invite Lucy.
#2
When did you see this film?
I don’t remember when I saw it.
When did you meet Mary?
I don’t remember when I met her.
When did you hear “Aida”?
I don’t remember when I heard it.
When did you go to Moscow?
I don’t remember when I went to Moscow.
When did you visit the art museum?
I don’t remember when I visited the art museum.
When did you read this novel?
I don’t remember when I read it.