21.
(A) question
(B) challenge
(C) defer to
(D) acquiesce to
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統計: A(1), B(1), C(7), D(10), E(0) #3853701
統計: A(1), B(1), C(7), D(10), E(0) #3853701
21.
(A) question
(B) challenge
(C) defer to
(D) acquiesce to