Choose the correct words to complete the story.
My dad gets up at six o'clock every day. He have to has to)/ has drive to the station
and catch the train to London. He 'mustn't/ had to / shall be late for work.
Yesterday morning, he 2 can't/ mustn't/ couldn't find his car keys. He looked in lots
of places but they weren't there. He has to / had to/must walk to the station.
He missed the train. He wasn't very happy.
Last night, he went into the living room. He shouted 'I can/shall / could see them!
They're behind the sofa!*
How did they get there? I'mustn't/ can't/ have to tell you, because I don't know-
but I think my baby brother knows the answer!