我们为周末的聚会预留了公园里的几张桌子。

We ___reserved a few tables in the park for the weekend party.

我提前预定了餐厅靠窗的座位。

I ___reserved a window table at the restaurant in advance.

尽管他看起来很友好，但在会议上他总是很沉默寡言。

Although he seems friendly, he always stays ___reserved during meetings.