Bonsoir, pourriez vous m'aider pour cet exercice d'anglais svp ? Merci d'avance!

Complete with the correct verb form.
1. If rich countries (be / not) so greedy, the
situation (be) much better.
2. If she (work) for Guyana's Environmental
Protection Agency, she (feel) a lot more
involved.
3. If we (have) more wisdom, we (keep) more
forests, like Guyana.
4. If you (save) money, you (be able) to travel to
the Caribbean


The conditional and past conditional
* conditional: It's possible if...
if... + simple past, ... would + BV
* past conditional: impossible unless you change
the past
if... + HAD + V-en, ... would + HAVE + V-en
If p. 296