【题目】(2016·北京)______ over a week ago, the books are expected to arrive any time now.
A. OrderingB. To order
C. Having orderedD. Ordered
在线课程【答案】D
【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 the books/the 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D。