21.Bob got seriously injured in the traffic accident, but luckily, the doctor came __________to save his life.
--- Why not go and have dinner in a restaurant? --- _________. It’s too expensive.
Some people are against the plan but _______ support it.
--- Can you climb that tree, my boy? --- __________ ?
_________ always succeed.
--- What’s Joan doing? --- _________ newspapers in the room.