問題詳情
Since the company ___________ in 1990, it has been donating 1% of its annual revenues to charities.
(A)founded
(B)was founded
(C)has founded
(D)had been founded
參考答案
答案：B
難度：適中0.577855
統計：A(37),B(167),C(23),D(50),E(0)
用户評論
【甄何】評論
He's had a car ever since he was 18.S + 現在完成式+ since + 完整子句( S + V)