When it comes to the civil war in Syria, the US government’s attitude towards it has experienced a(n)_______ change , which may have a positive effect on Syria present situation.

To make it up to his unpleasant experiences in hospital, the man drank a little more______．

You should be          of your          behaviour.

As a _______ rule, most flowers appear in spring.

—Why didn’t you buy the MP4 player?—I’d like to have, but I was ￡20 ______.