题目内容
8．______ over a week ago，the books are expected to arrive any time now．（ ）| A． | Ordering | B． | To order | C． | Having ordered | D． | Ordered |
分析 句意：这些书是一周之前订的，他们预计在现在的任何时间都可以到达．
解答 答案D．根据句意，"书预计在现在的任何时间都可以到达"，说明书已经被预定．而"order"与"the books"之间是被动关系，故选D．"having ordered"只能表示动作的完成，而不表示被动．
点评 本题考查的是非谓语动词，要分析动词与主语的逻辑关系，并结合具体的语境选择出正确的选项．
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