Li Ling’s mother wanted to know ________.
A . how did she study at school B . what she has studied at school
C . whether did she study hard at school D . if she studied hard at school
D
【解析】
【详解】
句意:李玲的妈妈想知道她在学校学习是否努力。
考查宾语从句。宾语从句应用陈述句语序,先排除 A 、 C 两项; B 项因主句 wanted 为一般过去时态,其宾语从句也应用过去的某种时态, B 项时态有误,故排除。故选 D 。