my cup is white and ____(your) is black.根據所給單詞的適當形式填空.

題目：

my cup is white and ____(your) is black.根據所給單詞的適當形式填空.

解答：

my cup is white and yours is black.
yours在這裡相當於your cup.
我的杯子是白色的,你的是黑色的.