desert

沙漠里白天很热，晚上很冷。

It's very hot in the ___desert during the day and cold at night.

撒哈拉沙漠是世界上最大的沙漠。

The Sahara is the biggest ___desert in the world.

沙漠里没有很多水。

There isn't much water in the ___desert.