The old woman kept one black dog and two white .A. oneB. onesC. thoseD. one’s

问题补充：

The old woman kept one black dog and two white .

A. one

B. ones

C. those

D. one’s

答案：

A. one

(答案→)B. ones

C. those

D. one’s

解析：这个老妇人养着一只黑狗和两条白色的。两只，要用复数代词，表示和上文是同一类，要用ones。所以选B。