你想要什么颜色的衬衫？

___What color shirt do you want?

她不知道要买什么礼物。

She doesn't know ___what gift to buy.

你可以告诉我你喜欢的任何东西。

You can tell me ___what you like.

你竟然考了满分！

___What, you got full marks on the test!

你说什么？我没听清楚。

___What? Could you say that again?