2. The participants in the pilot test were 13 upper-intermediate students ______ educational
and language backgrounds.
(A) in the magnitude of
(B) from a variety of
(C) with the exception of
(D) in the shape of
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統計: A(2), B(25), C(0), D(0), E(0) #3270138
統計: A(2), B(25), C(0), D(0), E(0) #3270138