[مستر محمد ديوشي عطا]

1- ..........The teacher pointed to the computer and asked us
( who invented it - who was it invented by? - who has invented - by whom had it been invented )
2- By next month, this problem ..... tackled
( should have - might have been - will have - must have been )
3- My father is always abroad ... business meetings . I see very little of him
( in - on - at - to )