2014
高考英语单项选择抓分练习（18）及答案 21．parents should pay attention to areas _______ their child is having difficulty and spend extra time to help him or her master those skills. a. as b. where c. why d. when 《答案》b 《解析》
试题分析：考查定语从句。本题中定语从句的先行词是areas，定语从句中的句子结构很完整，所以使用关系副词。why表示
