122. In order to encourage early _____ , we are giving a special discount to the first fifty
customers who sign up for our new service.
(A)adopt
(B)adapt
(C) adoption
(D)adaptability
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統計: A(85), B(82), C(616), D(152), E(0) #3075813
統計: A(85), B(82), C(616), D(152), E(0) #3075813