The answer is we, because nos means us in english.
<em>Children (go) with their parents to the pool.</em>
The second one
A and el can be combined but not a and la
Hope this helps!
Choose the most common gastronomic dish in Argentina
Una comida tradicional en Argentina es: un bistec a la parrilla y vino Malbec.
A traditional meal in Argentina is: a grilled steak and Malbec wine.