Please tell me when ( )computer lessons.为什么括号里要填to have

could you please tell me when we (r ) long steet? Please tell me when I should take the medicine please tell Eric to call me when.he _____back Please tell me when ___ ___（have)computer lessons. could you please tell me when the plane -------(take off) when/after you are ready,please tell me when you get marry,please tell me .when you get marry,please tell me I hope your good news Please tell me this please tell me Tell me a___,please. Why?Please tell me. Please tell me why? Please tell me dear When does the train arrive?Please tell me.(改宾语从句）Please tell me _____ the train_______. Please tell me when I should finish the report.(改为简单句)Please tell me when_______ _______ the report. when you finish,please tell me.这句话对吗?如果变为when you have finished,please tell me,When you have finished moving the furniture ,tell me ,please.这句话对吗 please tell me what do you want to say when you call me this morning? Return to myself life Please tell me when you like me!