"The teacher is going to answer the questions."
Translation:El maestro va a responder las preguntas.
Duo should accept both versions - responder and responder a for this sentence just like it does for other similar sentences. Reported. https://www.spanishdict.com/translate/answer%20the%20questions
Duo refused my answer: "La maestra va a contestar las preguntas." I don't understand why.
They underlined "responder" and said I used the wrong word, but "contestar" means "to answer" just as much as "responder" does.
It should be va a.
El maestro - The teacher
va a - is going to
responder - infinitive form of responder to answer
la preguntas - the questions.