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。 小题1:The

问题：

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。

小题1:The population of the earth is i____________ very fast.

小题2:A radio host usually says, “Good evening to all our l__________!” at the beginning.

小题3:Teachers and parents always e __________us to get good grades.

小题4:The band played many songs, i___________ some of my favorites.

小题5:The postman is very hard-working, and he sends the packages to their o ______day after day.