阿摩線上測驗
28 The flood problem has been____ about by the increase in global warming.
(A) caused
(B) happened
(C) brought
(D) sought
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統計： A(34), B(16), C(47), D(0), E(0) #1256479
統計： A(34), B(16), C(47), D(0), E(0) #1256479
