These days he has made in his studies by working hard.A. many progressB. a lot of progres

问题补充：

These days he has made in his studies by working hard.

A. many progress

B. a lot of progresses

C. much progress

D. many a progress

答案：

A. many progress

B. a lot of progresses

(答案→)C. much progress

D. many a progress

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