6. There _______ some big changes in people’s life since computer were invented.(A) were (B) used to

問題詳情

6. There _______ some big changes in people’s life since computer were invented.
(A) were
(B) used to be
(C) have been
(D) had been

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)