13. The voyage diaries were handed down by his great grandfather, so their brothers have kept them as .
A. the apple in their eyes
B. the apple of their mouths
C. the apple of their eyes
D. an apple of their eyes
网友回答
A. the apple in their eyes
B. the apple of their mouths
C. the apple of their eyes
D. an apple of their eyes
解析:可联系答.案.网客服索取。