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■So it seems that the supermarket won't open until 9:00.

I've told you that we _____ so early.

A. needn't come       B. needn't have come

所提供的答案為A。（為什么不是B呢？）

※比較：needn't come so early 的意思是“不必來這么早”，needn't have come so early 的意思是“本來不必來這么早”。根據句意，選A更通順。全句可譯為：看來超市要等九點鐘才開門，我告訴過你我不必來這么早的。

但是，如果沒有 I've told you that，則選 B 為佳。即：So it seems that the supermarket won't open until 9:00. We needn’t have come so early. （看來超市要等九點鐘才開門。我們本來不必來這么早的。）

■It turned out that the farmers had coped with the matter, which ____ her the trouble of going there by herself.

A. spared                 B. saved

兩個詞都有“省”的意思，為什么答案是A不是B呢？能說save/spare sb a lot of trouble嗎？

※個人認為，選B也不錯，如《牛津高階英漢雙解詞典》（第四版）的save詞條就有這樣一個句子：That will save us a lot of trouble. 那就省了我們很多麻煩。

■The project opened on July 4, 2007, but failed to draw enough crowds to keep its ____, and was closed in 2008.

A. action   B. performance    C. function    D. operation （答案為D，為什么不是其他答案呢？能翻譯一下該句嗎？）

※keep one’s operation為習語，意為“保持正常運轉”。句子可譯為：這個項目于2007年7月4日開張，但未能吸引足夠的人氣使其正常運轉，所以于2008年關閉了。

■以上解答案僅供參考。