我把钥匙放在桌上，你看到了吗？

I left the keys on the table, did you see ___them?

很难相信这是真的。

___It is hard to believe this is true.

外面下雨了。

___It is raining outside.

是你忘记了关灯，不是我。

___It was you who forgot to turn off the lights, not me.

这只小猫很可爱，它正在玩毛线球。

The kitten is so cute, ___it is playing with a ball of yarn.