Question

They are (to ride) horses near the river now.​

Answer 1

Ответ:

They are riding horses near the river now

Объяснение:

в Present continuous к глаголу добавляется ing окончание.

to ride = riding

walk = walking

go = going

do = doing

to think = thinking

to listen = listening

Answer 2

The correct sentence would be:

"They are riding horses near the river now."