你昨天在会议上说的是什么内容？

___What did you say at the meeting yesterday?

你能告诉我发生了什么吗？

Can you tell me ___what happened?

你可以穿你想穿的衣服去参加派对。

You can wear ___whatever you want to the party.

他做的蛋糕真是太好吃了！

___What a delicious cake he made!

你说什么？我没听清楚。

___What? I didn't hear you clearly.