Ответ:

1) Who prepared a report for the conference?

What did he do with a report for the conference?

What did he prepare for the conference?

When did he prepare a report for the conference?

2)Who flew to Egypt 3 days ago?

Where did the Walter flow 3 days ago?

How many days ago did the Walter flow to Egypt?

3) Who was in the Park with...?

Where was Janet with her....?

With whom was Janet in the parc?

When was Janet in the Park with her daughter?

4) Who were in front of the museums...?

Where were the tourists some minets ago?

5) What Clive gave me last Wednesday?

When Clive gave me this disk last...?