◎ 题干
On receiving a phone call from his colleague ____ the suspected criminal had shown up, the
police officer left home immediately.
[     ]
A. to say
B. says
C. saying
D. said
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“On receiving a phone call from his colleague ____ the suspected criminal had shown up, the police officer left home immediately.[ ]A. to sayB. saysC. sayingD…”主要考查了你对  【现在分词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。