20. According to the school uniform rules, all students are _______ to
wear shorts even in winter.
(A) required
(B) landed
(C) omitted
(D) prevented
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統計: A(89), B(17), C(15), D(28), E(0) #3180631
統計: A(89), B(17), C(15), D(28), E(0) #3180631