18. The spy caught the military base was sentenced to 20 years in prison and was limited no relative visiting.
A. to spy on; to
B. spying on; to
C. to spy on; with
D. spying on; with
网友回答
A. to spy on; to
(答案→)B. spying on; to
C. to spy on; with
D. spying on; with
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