25. Many local groups are working hard to ________ the traditional languages before they completely disappear.
(A)preserve
(B)scatter
(C)motivate
(D)volunteer
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統計: A(206), B(13), C(43), D(8), E(0) #3712795
統計: A(206), B(13), C(43), D(8), E(0) #3712795