问题
选择题
Go back home now, Mary. Your parents ______ your safety.
A．are concerned about
B．are concerned with
C．are concerned on
D．concern of
答案
答案：A
题目分析:句意：现在回家，玛丽。你的父母担心你的安全。Be concerned about 担心；be concerned with牵涉到,与……有关，其他不构成搭配，根据句意可知选A。