阿摩線上測驗
37. The public is waiting to see what the tax reform can do to the economy ___________ it is written into law.
(A) again
(B) once
(C) then
(D)or
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統計： A(12), B(314), C(93), D(17), E(0) #1889738
統計： A(12), B(314), C(93), D(17), E(0) #1889738
