Use of Infinitives or Gerunds for purposes

This new software is useful (a)   (organize) all my pictures.

An electronic translator is great for (a)   (get) definitions when you dont know the words.

I need a better computer (a)   (run) all of this new software

We cant use a dictionary (a)   (look up) words during a test.

I called my mom (a)   (tell) her I will be late tonight.

Smartphones are great for (a)   (communicate) with my friends and family even if I am away.

Do you use the wireless connection for (a)   (get) on the internet?

Students are not allowed (a)   (use) their celphones in class unless the teacher says its ok.

We use the airconditioner (a)   (cool down) the room especially in the summer.

(a)   (eat) healthy food is important for long happy life.