Make the sentences interrogative.​

1)Had she sprained her waist after the ambulance took her to hospital?

2)Had the sportsman set a world record by 1997?

3)Had we already booked tickets before we went to the opera?

4)Had the match ended before we arrived?

5)Had we left for home before the rain began?

6)Had i twisted my ankle before the match was over?

7)Had the fox run away before we could catch it?

8)Had my dreams come true by 2013?

9)Had Mike's family moved to another place before the terrible earthquake?

10)Had he returned?

actually, the correct way to write this:

1. when was the radio invented?

2. the book was written by pushkin.

my friend works at factory because he's a metallurgist. another friend is an advising seller of electronic equipment and clerical aids, therefore he works at office. his home is quite close to the office.