依次填入下列各句横线处的成语，最恰当的一组是（ ）①他的兴致被突然传来的坏消息吹得_________。②想到众兄弟就要________，他不免一番悲戚。③他生平最是趋炎附势的，如何肯___________。

______ we do must be in the interests of the people.

How is the old man — .

Could I use your bike for a while. Sam— ________. I’m not using it.

Press the button when the light goes on- you will soon__ it. [ ]