26. The teacher encouraged his students to be _____ in class. He wanted them to speak up about their opinions.
(A) chronic
(B) fragile
(C) sneaky
(D) vocal
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統計: A(44), B(35), C(23), D(199), E(0) #2564426
統計: A(44), B(35), C(23), D(199), E(0) #2564426