你最喜欢的季节是什么？

___What is your favorite season?

你能告诉我你想要什么吗？

Can you tell me ___what you want?

为什么你昨晚没来参加派对？

___Why didn't you come to the party last night?

这就是为什么我昨天没来上学。

That's ___why I didn't come to school yesterday.