I find it hard difficut to adapt (a)   a new situation.

Hard work always leads (a)   success.

Everything depends (a)   what happens tomorrow.

Have you heard (a)   the new minister?

Walking under a ladder may result (a)   bad luck.

Sorry, I confused you (a)   another person.

He was banned (a)   entering the country.

You can't prevent a disaster (a)   happening.

He can communicate (a)   5 different languages.