My cousin studied law at Harvard University. He is now a successful lawyer.
A. My cousin which studied law at Harvard University is now a successful lawyer.
B. My cousin who studied law at Harvard University is now a successful lawyer.

Random Topics:
Relative Clauses beginning with PrepositionsImperative SentencesFigure of SpeechGrammar - to bePresent Perfect SimpleGrammar and SyntaxHomophonesPresent Simple Tense PassiveAdverbial Clauses of Reason / CauseGRAMMAR - Could / Could notOther quiz:
Grammar › ViewMy mother is a ____ . She fixes teeth.
A. nurse
B. doctor
C. dentist
D. pianist
Reported Speech › View
I can’t go to London with you because I don’t have much money.
A. Lucy said that she couldn’t go to London with me because she hasn’t had much money.
B. Lucy said that she couldn’t go to London with me because she didn’t have much money.
C. Lucy said that she couldn’t go to London with me because she doesn’t have much money.
Grammar Error Correction (Simple Present Tense) › ViewMy brothers has pets
A. TRUE
B. FALSE
Past Tense › View
When ____ the concert _______?
A. did – begin
B. is – began
C. did – began
D. is – begin