我们没有参加一个（有组织的）旅行团。

We didn't go on an ___organized tour.

信件被放在（有组织的）堆中，每堆对应字母表中的一个字母。

The letters had been placed in ___organized piles, one for each letter of the alphabet.

有没有（有组织的）旅行？

Are there any ___organized trips?