She was concerned______ her 15-year-old daughter who was often seen going out with a man twice her age.
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You are at it again.Why are you so involved______ this?Can't you forget all about it? It doesn't concern us at all.
He had just killed a student on campus,but this young man did not show any fear.Being the son of a local police officer he believed he could easily make it ______ by offering money to the student's family.
Perhaps the greatest painter in our country in the past century, Wu Guanzhong, he specialized______ impressionist and abstractionist schools of art.
This view seems to be peculiar______ our culture which traditionally tends to describe the nation as a large family.