阿摩線上測驗
3. The bus driver often complains about chewing gum found under passenger seats because it is ______ and very hard to remove.
(A) sticky
(B) greasy
(C) clumsy
(D) mighty
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統計： A(151), B(12), C(16), D(10), E(0) #3362481
統計： A(151), B(12), C(16), D(10), E(0) #3362481
