根据汉语提示写出相应的单词。
1. He is a _____ (成员) of the Communist Party.
2. They _____ (回到) home after school yesterday.
3. The Young Pioneers clean the rooms for the old grandma _____ (自己).
4. The snow will _____ (融化) when spring comes.
5. He went to school _____ (没有) breakfast.
1. member
2. returned
3. themselves
4. melt
5. without