Travelling abroad:

http://learnenglishteens.britishcouncil.org/skills/listening-skills-practice/travelling-abroad

FUTURE: 'be going to'

https://www.ego4u.com/en/cram-up/grammar/future-1-going-to

http://learnenglishkids.britishcouncil.org/en/grammar-practice/going-plans

http://www.agendaweb.org/verbs/future-be-going-to-exercises.html

FIRST CONDITIONAL:

http://www.englishclub.com/grammar/verbs-conditional_2.htm

http://www.esl-library.com/pdf/lessons/636.type1.pdf

http://www.englishgrammarsecrets.com/firstconditional/menu.php

http://www.perfect-english-grammar.com/first-conditional-exercise-1.html

http://www.ecenglish.com/learnenglish/lessons/first-conditional