完形填空Americanpeoplehavethehabitofsaying“Thankyou”whensom...
问题详情：完形填空Americanpeoplehavethehabitofsaying“Thankyou”whensomethingkindisdoneforthemorsomethingpoliteissaidtothem,nomatterhoweasythethinghabitislearnedbypeopleofmany1countries.Youshouldsay“Th...