The university entrance exams _____ quite a bit since the 90s, when I took mine. Preenche corretamente a lacuna:
a) has changed
b) have changed
c) had changed
d) has been changing
e) have changing
The university entrance exams have changed quite a bit since the 90s, when I took mine.
O substantivo exams está no plural, correspondendo ao pronome they (eles, usado para coisas e pessoas), portanto, usamos o verbo auxiliar have, em exams have.
Present perfect: have / has + verbo principal no past participle.
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