When I saw the cars crash on the road,a frightened feeling______through my mind.

Remember this, my son. ______ careful you are, _______mistakes you will make.

The famous reporter, who is said to have gone back to America last year, _____in China for almost twenty years

The woman___the chocolate bar and gave each child a small piece.[ ]

下列句子中，加点的成语使用恰当的一项是