____ regular training in nursing,she could hardly cope with the work at first.
A.Not having received
B.Since receiving
C.Having not received
D.Not received
网友回答
A解析考查非谓语动词作状语。Receive和主语she是主谓关系，用doing形式。且receive发生在主句谓语动词之前，用having received，not放在非谓语动词前。选
A.