【题目】Mother wanted to be a good provider, a role she ______ since her marriage to Father.
A.shouldersB.shouldered
C.is shoulderingD.has been shouldering
在线课程【答案】D
【解析】
考查时态。句意：母亲想成为一个良好的持家者，自从她嫁给父亲后，她就一直承担着这个角色。本句的关键是后面的since her marriage to Father，该介词表示“自从…”要和现在完成时或者现在完成进行时连用。故D正确。