用所给单词的适当形式填空.
6.Thank____for____(you)help.7.--Excuse_____(I),is this ____(he)ruler?--NO,it's____(she).8.These erasers are____(Grace),they are not____(I) 9.My pen is green.What about____(you)?10.____is my English teacher(老师）.The book is___(she)