A man is driving home on a cold rainy night. At a bus top, he sees three people waiting for a bus.
The first person is    1    best friend. This friend saved (救) his life years ago. The second one is his
aunt. She's very    2    and needs to go to hospital at once. The third one is the man's girl friend. He
loves her very much. The man wants to help    3    of them, but his car is very small and he can 
   4    only one in the car. Now he has his biggest    5   . Who's the one that he can take?