单项选择题Peter is experiencing a difficult period in his life.
单项选择题Thus our conviction is reinforced that only social revolution can really solve the problems of the people.
单项选择题Do you need anybody to assist you in your work
单项选择题Sandre came across an important letter yesterday while cleaning the desk.
单项选择题Extremely refined behavior, however, cultivated as an art of gracious living, has been characteristic only of societies with wealth and leisure, which admitted women as the social equals of man.