Составить вопросы к словам в скобках в предложении . (in oxfordd and cambrige the study system) is based entirely around tutorials which take place (once a week ).

Where is the study system based entirely around tutorials? (к In Oxford and Cambrige)
What is based entirely around tutorials in Oxford and Cambrige? (к the study system)
How often do tutorials take place in Oxford and Cambrige? (к once a week)