问题
选择题
It came as a great _______ to the parents that their son finally came back safe and sound.
A．favor
B．sense
C．relaxation
D．relief
答案
答案：D
题目分析：A. favor恩惠，帮助，B. sense 感觉，C. relaxation放松，D. relief 宽慰，缓解，根据句意：儿子安然无恙的回来对父母是个安慰。所以选D。