Why do not you_____(send)a postcard to your grandma大哥哥大姐姐 能不能告诉我为什么啊 如果在遇到这样的题我还是不会啊

Why do not you_____(send)a postcard to your grandma大哥哥大姐姐 能不能告诉我为什么啊 如果在遇到这样的题我还是不会啊 why not do it Why do not want why not do句子 what size do you_____. why not do还是why not to do why not do同义句是啥?why not do同义句 why do not you...造句 why not +doing还是do why not +什么 doing?do? Why I do not know why not sb +do还是to do why not doing sth还是why not do sth还是why not to do sth why do not you =why not ______ why not to do 还是why not doing 是why not do sth.还是why not doing sth. why not to do还是why not doing why do not和why not有什么不同?