Question

They are listings/listened/listened/have listened the radio at the moment. ​

Answer 1

Ответ:

They are listening to the radio at the moment. ​

Объяснение:

at the moment = в данный момент, действие происходит сейчас, поэтому выбираем Present Continuous.

И не забывайте предлог to после listen (listen to)

Answer 2

The sentence you provided appears to have some grammatical issues. Here's a corrected version of the sentence:

"They are listening to the radio at the moment."

In this corrected sentence, "listening" is in the present continuous tense, which is used to describe actions happening right now.