hard and you will make greater progress.A. If you studyB. StudyC. StudyingD. To study

问题补充：

hard ,and you will make greater progress.

A. If you study

B. Study

C. Studying

D. To study

答案：

A. If you study

(答案→)B. Study

C. Studying

D. To study

解析：考查特殊句式。祈使句+ and 后用一般将来时态，句意：努力学习你会取得更大的进步。所以选B。