______ children spend hours in w

______ children spend hours in watching television, they may develop problems in dealing with real-life people.
A、When
B、What
C、How
D、Why
【正确答案】：A
【题目解析】：答案选A。状语从句。当孩子们花时间在看电视上，他们可能在与现实生活中的人交流时存在问题。