The mother was filled with about her daughters health,so she asked the doctor for help.

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A. eagerness
(答案→)B. anxiety
C. disappointment
D. fright
解析：句意：母亲为女儿的健康忧心忡忡，于是她请医生帮忙。eagerness渴望;热心;热切anxiety焦虑；忧虑；disappointment失望；fright惊吓,恐怖。根据题意，只有B项正确。