阿摩線上測驗
35. In order to be registered for our 5-year warranty, please send us the following postage-paid registration form
___________ 7 days of purchase.
(A)by
(B)until
(C) before
(D)within
答案：登入後查看
統計： A(15), B(10), C(28), D(196), E(0) #678700
統計： A(15), B(10), C(28), D(196), E(0) #678700
