Answer:
Underline the indefinite determiners with one line and the indefinite pronouns with two. All the children go out into the streets. They all spoke at the same time. There are few books on the table. The child eats little meat. Everything was delayed. Put too much meat. He didn't know much English. Someone came through the door. Some boxes fell off.
Explanation:
You put this under Spanish so I assumed you wanted it translated
The answer is A because all the others are wrong. You are saying that Marcos was studying when I arrived at his house.
Los niños (ir) con sus padres a la piscina. (van)
Los niños van a ir con sus padres a la piscina. XD :)