Answer:
1 When did your son complete his university studies?
Would you mind telling me when you son completed his university studies?
2 What A-level subjects has your sister chosen?
Could you tell me what A-level subjects your sister has chosen?
3 Has Molly written her essay?
Do you mind if I ask if Molly has written her essay?
4 Who was it who told you I was worried about my exams?
Can I ask you who it was who told you I was worried about my exams?
5 Was it Melanie I saw your son with last night?
Do you know if it was Melanie I saw your son with last night?
6 Where is your brother's car parked?
Can you tell me where your brother's car is parked?
7 Was it Chelsea who won the FA Cup last year?
Do you remember if it was Chelsea who won the FA Cup last year?
8 Who was it who first climbed Everest?
Do you remember who it was who first climbed Everest?
9 When did he give up teaching?
Can I ask when he gave up teaching?
10 Was it Alexander Fleming who discovered penicillin?
Am I right in thinking that it was Alexander Fleming who discovered penicillin?
