It_______we had stayed together for a couple of weeks_______I found we had a lot in common.[ ]

Today, we’ll discuss a number of cases ____parents have much difficulty in communicating with their children

ly the whole nation, but thewhole Europe , indeed the whole human society ______ to alter its attitude toracial problems

There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be closed.

This is book.