The police accused him of setting fire to the building but he denied ________ in the area on the night of the fire.
句意: 警方指控他故意纵火, 但是他否认当晚出现在了失火建筑附近区域。 deny doing sth.为固定搭配, 意为“否认做过某事”。 由于事情发生在过去的过去, 故使用完成式。