"They have to place the ruler on the table."
Translation:Ellos tienen que poner la regla sobre la mesa.
Estelle0 I had the exact answer as above. Whoever marked "tienen" incorrect (showed it should be "tiene"!!!)had better go back to study plural verbs. I've never found out how to report this-can someone help me? Thanks--I know so many of you do from the notes telling one to report an error.