ركن السؤال و الأجابة 2

[AMR QENAWY]

First of All i ask Allah Almighty to bless you
find the mistake -
1- The tourist took some photographs when he was visiting the museum .
2- They have sold their house and went on a tour of the world
3- That's what i have decided to do if there are any objections.
4- i lost my mobile but i don't know when .

choose
1- The story which was written as a radio play , ( called - was called ) " The Great hero / / / and why
2- ? If you see mazen tomorrow ( could - can ) you ask him to call me
3- if i leave now , i ( might - will - can - should ) catch the train , but it's too late /////////// and why

i think we will use ( might ) in number three but if that's right does it mean that this is a combined conditional
also, i think that in number 2 both answers can be chosen
finally i think that we can't use ( called ) in number 1 because it will mean ( which was called ) and the text will not be valid