在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。
(1)The population of the earth is i very fast.
(2)A radio host usually says, “Good evening to all our l !” at the beginning.
(3)Teachers and parents always e us to get good grades.
(4)The band played many songs, i some of my favorites.
(5)The postman is very hard-working, and he sends the packages to their o day after day.
