【题目】_______ over a week ago, the books are expected to arrive any time now.
A. Ordering B. Having ordered
C. Ordered D. To order
【答案】C
【解析】
考查非谓语动词。句意:(因为)那些书是一周多之前订的,现在随时有可能送到。books和order是动宾关系,即order books/books are ordered,故用过去分词表示被动和完成,在此相当于原因状语从句because they were ordered...。故选C。