阿摩線上測驗
40. If mastering this language is his goal, he had better ______ himself with native speakers.
(A) acquaint
(B) acquaints
(C) acquainting
(D) acquainted
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統計： A(383), B(24), C(123), D(138), E(0) #2053391
統計： A(383), B(24), C(123), D(138), E(0) #2053391
