___he came to study in the university,he has made much progr

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___he came to study in the university,he has made much progress in the study of English.
A.While B.When C.Since D.After
老师这道题中BCD我觉得都可以选,但是答案是c,

因为此题中,主句用了has made...,为现在完成时,
Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用
acd不跟现在完成时连用

___he came to study in the university,he has made much progr [ ] he came to study in theu Uiversity,he made much progress ____he studied in the university,he has made much progress i ___he entered the university,his english has been much impro Finally came the day ___he had to begin his study for the ne he made his way to yale university in 2000,_____ He is going to study English at the University. He made such a __________ contribution to the university tha What university are you going to study in the US? .Mr.Duke has worked in the company ________ he came to New Y He has been admitted to a famous university，______ made his He must be in the classroom ,___he?