单选题
The boy denied (to have seen) (anyone) in the building when (being questioned) by the teacher (shortly after) the incident.
A、
to have seen
B、
anyone
C、
being questioned
D、
shortly after
【正确答案】
A
【答案解析】
[解析] 应改为having seen，因为deny后面要跟动名词做宾语。
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