阿摩線上測驗
21. The principal urged teachers not to ______ students' concerns simply because they appeared trivial.
(A) put off
(B) bring about
(C) carry out
(D) brush aside
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統計： A(3), B(1), C(1), D(3), E(0) #3955161
統計： A(3), B(1), C(1), D(3), E(0) #3955161
