问题
选择题
The old couple are living ,for their only son works abroad after graduation.
A．on their own
B．of their own
C．separately
D．particularly
答案
答案：A
“惟一的儿子在国外工作，因此这对老年夫妇独自生活。”on ones own“独自地”;of one’s own“某人自己的”，C、D两项与句意不符。