Good habits help me get good grades.A. studyingB. studyC. studiesD. studied

问题补充：

Good habits help me get good grades.

A. studying

B. study

C. studies

D. studied

答案：

A. studying

B. study

C. studies

D. studied

解析：

试题分析: 句意：好的学习习惯帮我取得了好成绩。get good grades取得了好成绩；本句为动名词做主语，故答案选A。