He took off his coat, all his pockets, but couldn’t find his key.
A. searched
B. searching
C. to search
D. searches
网友回答
(答案→)A. searched
B. searching
C. to search
D. searches
解析：考查动词的用法。句意“他脱下外套，翻遍了所有的口袋，但是找不到钥匙。”几个连续的、表示过去的动作，只在最后一个动作前加and/but。故本题填searched。故选A。