20. This edited book offers up-to-date overviews of research methods ____ linguistic research.
(A) used in
(B) using with
(C) being used to
(D) used up in
(E) in use
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統計: A(228), B(18), C(71), D(10), E(2) #1804803
統計: A(228), B(18), C(71), D(10), E(2) #1804803