If you want to make progress you’d better be strict yourself your studies.A. with; inB.

问题补充：

If you want to make progress, you’d better be strict yourself your studies.

A. with; in

B. with; about

C. in; with

D. about; in

答案：

(答案→)A. with; in

B. with; about

C. in; with

D. about; in

解析：形容词strict的固定搭配为：be strict with sb in sth在…方面对某人要求严格。句义：如果你想要取得进步，你最好在学习方面对自己要求得更为严格。根据句义说明A正确。