13 Besides the grades they obtained at the exams, students also got ______ points for making a good progress.
(A) different
(B) extra
(C) minus
(D) positive
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統計: A(133), B(1159), C(45), D(232), E(0) #418770
統計: A(133), B(1159), C(45), D(232), E(0) #418770