用方框内所给词或短语的适当形式填空。（其中有一个为多余短语）
give up, with one's help, as long as, great, get lost, work out
【小题1】I think mother's love is the ________ in the world.
【小题2】If you ________ in the city, you'd better ask the police for help.
【小题3】________ I get something good, I will share it with my friends.
【小题4】Never ________, you will achieve your dream.
【小题5】Jack is smart. ________, I finished my work on time.