6. There will be a 20-hour _____ of Marvel superhero movies on TV this Saturday.
(A) treatment
(B) marathon
(C) blank
(D) warning
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統計: A(24), B(313), C(16), D(7), E(0) #3156175
統計: A(24), B(313), C(16), D(7), E(0) #3156175