问题

The drug children came under strong attack from professional observers who were deeply __ its widespread use among kids.

A:concerning; concerned; concerned with
B:concerning; concerned; concerned about
C:concerned; concerning; concerned about
D:concerned; concerning; concerned with;

正确答案是：

同类题型

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be upsetI think Tom, rather than you,_______

Your story is perfect；I’ve never heard ________ before.

The man is ________ a serious nervousbreakdown because he is unable to deal with pressure from daily life.

正确答案网

The drug ______ children came under strong attack from ______ professional observers who were deeply ______ its widespread use among kids.

The drug children came under strong attack from professional observers who were deeply __ its widespread use among kids.