阿摩線上測驗
116. While the initial cost of the solar panels is high, the long-term savings on electricity bills are quite ______.
(A) attract
(B) attraction
(C) attractive
(D) attracted
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統計： A(6), B(17), C(174), D(17), E(0) #3805304
統計： A(6), B(17), C(174), D(17), E(0) #3805304
