smothercameinhe的精选

问题详情：WhenJim’smothercamein,he_______hishomework.      A．isdoing                          B．hasdone                       C．wasdoing【回答】C知识...

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...