"They put the bread on the table."
Translation:Ellos ponen el pan en la mesa.
In English the word "put" is used in the present and past tense. In Spanish however the verb "poner" (to put) is conjugated differently for the past and present tense. Therefor this sentence could be translated in Spanish in two ways "ellos pusieron (past tense) el pan en la mesa " or "ellos ponen (present tense) el pan en la mesa". Unfortunately Duolingo in error only accepts one answer "ellos ponen el pan en la mesa".