She doesn't know whether to go or wait.为什么前面用的是to go,后面却用wait而不加to呢?原题是She doesn't know whether ______(go) or wait.go,但是为什么?

she doesn't know what's happiness还是she doesn't know what happiness She doesn't know what she should do.(同, She doesn't know me,but Iknow who she is she doesn't know what to say.(改为同义句) she doesn't know（）（）（）（）wear.she doesn't know what to wear. she doesn't know what she will wear today .(同义句） she doesn't know _____ _____ ___ today she doesn't know where she should go同义句转化 she doesn't know ______ _______ _______ she doesn,t know what should do改为同义句 I know why she doesn't 是对的吗 she doesn't know where she should go .(改为同义句)she doesn't know____ _____ ___. I don't know French,she doesn't know French ,either .(改为同义句） she后面什么时候加does什么时候用do?例如she don't know,she doesn't know She doesn't know how to along with her classmatesShe doesn't know how to （ ）along with her classmates She doesn't know where she was还是when she is She doesn't know ( )She doesn't know ( )A what she csn doB where would she go C whose book is thisD why is he late She doesn't know when she can arrive to the airport同义句She doesn't know when she can arrive to the airport.She doesn't know ____ ____ arrive at the airport She doesn't know when she can arrive to the airport改为同义句She doesn't know when she can arrive to the airport.She doesn't know ____ ____ ____ at the airport. She doesn't know.What is electricity?(合并为一句）She doesn't know________ __________is. She doesn't know where she can spend her holiday in summer否定句She doesn't know where she can spend her holiday in summerShe doesn't know ______ ________ spend her holiday in summer