hishomework的精选

问题详情：WhenJim’smothercamein,hehishomework. A. isdoing     B. hasdone     C. wasdoing【回答】C知识点：动词和动词短语题型：选择题...

问题详情：WhileXiaoMing         hishomework，hismothercamewithacupoftea．（）A．hasdoing             B．haddone                C．isdoing                D．wasdoing...