你最喜欢的颜色是什么？

___What is your favorite color?

她忘记了她把钥匙放在什么地方了。

She forgot ___what she did with her keys.

多么精彩的表演啊！

___What an amazing performance!

我问他想要什么生日礼物。

I asked him ___what he wanted for his birthday.

你说什么？我没听清楚。

___What? I missed what you said.