写出下列动词的第三人称单数形式、动词+ing形式和过去式

问题描述:

写出下列动词的第三人称单数形式、动词+ing形式和过去式
spend see write watch sit read have listen

spend spends spending spentsee sees seeing sawwrite writes writing wrotewatch watches watching watchedsit sits sitting satread reads reading readhave has having hadlisten listens listening listened