阿摩線上測驗
32 The tech industry had a hard hit last year. Many tech companies stumbled, digital ad sales _______, and investors lost faith.
(A) patented
(B) plunged
(C) plagued
(D) pledged
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統計： A(6), B(62), C(16), D(9), E(0) #3462446
統計： A(6), B(62), C(16), D(9), E(0) #3462446