書名：新多益閱讀題庫大全
頁數：p.78 第4題
題目：Until recently, the Family Entertainment Arcade located in
the mall ____ not generating the revenue its owners expected.
(A)is (B)was
(C)to be (D)be
疑問：為甚麼答案是(B)不是(A)
也想問until可以搭配哪些時態
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書名：新多益閱讀題庫大全
頁數：p.103 第20題
題目：Ms. Wang maintains that the customer service department never ____ to
the e-mail she sent last month regarding the defective product.
(A)replies (B)replied
(C)reply (D)replying
疑問：為甚麼答案是(B)而不是(A) 覺得是陳述事實而用現在式
謝謝高手的解惑~