それをすぐ終えましょう。

that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

immediately; at once; directly; soon; before long; shortly; easily; without difficulty; right (near); nearby; just (handy)

to finish; to graduate