問題詳情
15.The volunteer schedule is quite __________. Some stop by for an hour or so each week. Others put in oneSaturday morning a month helping with whatever needs to be done.
(A)bitter
(B) flexible
(C) modest
(D) vivid
參考答案
答案：B
難度：簡單0.825
統計：A(1),B(33),C(1),D(2),E(0)
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