Peopleareveryabouttheproblemstheenvironment.A.concerning;concernedB.concerning;concerningC.concerned;concernedD.concerned;concerning

题目详情

People are very _____ about the problems ____ the environment.

A. concerning; concerned B. concerning; concerning

C. concerned; concerned D. concerned; concerning

▼优质解答

答案和解析

分析：
句意：人们十分担忧关于环境的问题。be concerned about关心，担忧；concerning为介词，意为“关于”。故选D。

考点：
考查形容词和介词

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