Where are their ___ They can't find ___.A.watch,them B.watches,it C.watches,them选择并语法说明

Where are their ___ They can't find ___.A.watch,them B.watches,it C.watches,them
选择C
选择watches复数形式是因为前面有系动词are复数
后面find后面的是指watches复数形式,所以用them
因此选择C