她喜欢穿灰色的衣服，因为灰色很百搭。

She likes to wear ___gray because they match everything.

公园里既有年轻人玩耍，也有白发老人在下棋。

The park has both youngsters playing and ___seniors playing chess.

这些旧照片已经慢慢发黄变灰了。

These old photos have gradually ___grayed over time.