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。
The population of the earth is i____________ very fast.
A radio host usually says, “Good evening to all our l__________!” at the beginning.
Teachers and parents always e __________us to get good grades.
The band played many songs, i___________ some of my favorites.
The postman is very hard-working, and he sends the packages to their o ______day after day.