Good at or Good in

🍏A few combinations comprising prepositions!

Versed vs. Excel vs. Good vs. Adept vs. Proficient vs. Expert+ prepositions 

####Versed

Versed in sth

####Excel

Excel in languages/ sports/ subject

Excel at v1ing

####Good

Good at sth

Good at v1ing

####Adept 

Adept at sth

Adept at v1ing

####Proficient

Proficient in subject/ language

Proficient at it/ my job etc.

####Expert

Expert in subjects (statistics/ family law/ health care/)

Expert at languages/ v1ing

Expert on the cold war/ animals/ any art etc.

Sources

Oxforddictionaries

Dictionary.cambridge

Thank you