A man in a red shirt is standing next to a woman in a blue dress. They are both holding hands and smiling at each other. If Nobody knew whether there was life on Mars because, oddly enough, nobody had looked until now., can we conclude that 'If was unknown as whether their was life on Mars or not.'? If I decided to go and get something to eat instead., can we conclude that I decided to get a cheeseburger for lunch.? and um of course there's a lot of money in cleaning you know if you get a good business going
yes
yes
it is not possible to tell
yes