Excuse me, is the post office? —About 500 metres away. [ ]

There will be _____ pollution this year than last year.

This is _______ difficult problem that few students can work it out. [ ]

The old music _____ me_____ my days in my hometown.

Li Lin, you shouldn’t shout at your parents. It will make them very angry.—I’m sorry ______what I______.[ ]