18. It’s important _____ that what they’re learning is worthwhile.
(A) the fact that students believe
(B) whatever students believe
(C) for students to believe
(D) however students believe
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統計: A(14), B(14), C(349), D(4), E(0) #888163
統計: A(14), B(14), C(349), D(4), E(0) #888163