阿摩線上測驗
3 One of the things that preoccupies test designers and teachers alike is _____ has been called the
washback or backwash effect.
(A)why
(B)whom
(C)which
(D)what
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統計： A(33), B(112), C(149), D(235), E(0) #2065772
統計： A(33), B(112), C(149), D(235), E(0) #2065772
