The company has a large ______ of delivery trucks to serve its customers.

Economic ______ is essential for a thriving society.

The _______ regions of the Earth have a tropical climate throughout the year.

The _______ of fresh water in the desert is a significant challenge for the local population.

Oil and gold are examples of valuable ______ traded on the market.

The microphone was used to _____ the speaker's voice so everyone could hear.