This crossword puzzle has an error with the boxing and i think i know the word that's supposed to go there but it's missing a box what should i do?

Ask your instructor

Ask your teacher and Show her the error

The answer should be a.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !