DuringtheSecondWorldWar,Roosevelt,StalinandChurchillmetat________.
Theboycomplained_______apaininhisstomach.
句子写作：Iwasveryembarrassed.Ididn’tknowwhatIshoulddo.
Thisisthemostbeautifulvillage_______Ivisitedtheseyears.
TheoriginoftheAmericanpartysystemcanbetracedto________.
