单选题 When I caught him ______, I stopped buying things there and started dealing with another shop.
A. cheating B. cheat
C. to cheat D. to be cheating

【正确答案】 A

【答案解析】[解析] catch作“当场破获，发觉，撞见(某人)做某事(尤指坏事)”讲时，后面常接“名词(代词)+现在分词”，例如：I caught the boys stealing apples from my garden. 我撞见那些孩子们偷我园中的苹果。You won't catch me doing that again!我再也不会干那种事了。因此，A项为正确答案。