问题补充:
a reply, he decided to send another e-mail.
A. Not receiving
B. Receiving not
C. Not having received
D. Having not received
答案:
A. Not receiving
B. Receiving not
(答案→)C. Not having received
D. Having not received
解析:考查分词短语做状语。根据句意说明没有收到答复在先,故使用完成式,其否定形式直接在前面加not.句意:因为没有收到回复,他决定再发一份电子邮件。