阿摩線上測驗
13.aFor many college students, financial burden can be the single biggest ____________ in the way of finishing their degrees.
(A) moment
(B) wealth
(C) obstacle
(D) channel
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統計： A(13), B(13), C(62), D(5), E(0) #1203599
統計： A(13), B(13), C(62), D(5), E(0) #1203599
