Jack thinks Daisy is going to take a gap year after graduate, _______?

Knowledge: Question tag

Sentences starting with: S + think/suppos/hope… (that) + subordinate clause

– If S is “I” => the question tag asks for the subordinate clause

– If S is other subjects => the question tag asks for the main clause (S + think/suppos/hope…)

Jack thinks => doesn’t he?

Jack thinks Daisy will take a year off after graduation, doesn’t she?