这个地区的温度通常在几十度之间波动。

The temperature in this area usually fluctuates in the ___tens.

考试前的教室里充满了紧张的气氛。

The ___tension in the classroom was palpable before the exam.

商店里的鸡蛋通常按打出售。

Eggs in the store are usually sold in ___dozens.