1) Do you think the rash that develop on my body is caused by vitamin overdose?
2) What do you think is the reason why the rash develop on my arm?
3) Do you think vitamin overdose is the reason why the rash develop on my arm?
I am not sure if the above sentences are correct, please advise. Do they need any correction?
Last edited by Rover_KE; 21-May-2013 at 12:13. Reason: Changing 'advice' to 'advise'.
Some people don't like 'the reason why'. It is perhaps better use 'the reason that' - or just 'the reason'.