FCE EXPRESSIONS - INFINITIVE OR GERUND?

I'M LOOKING FORWARD TO FINISH / I'M LOOKING FORWARD TO FINISHING this course - I can't wait!

I HAVE DIFFICULTY REMEMBERING / I HAVE DIFFICULTY TO REMEMBER phrasal verbs.

WE'D BETTER GO / WE'D BETTER TO GO / WE'D BETTER GOING - we're going to miss the bus!

I'M NOT USED TO GETTING UP / I'M NOT USED TO GET UP at 7 - it's killing me!

I CAN'T HELP TO LAUGH / CAN'T HELP LAUGHING when someone falls over in public.

THERE'S NO POINT TO WORRY / THERE'S NO POINT WORRYING about the past - I mean, you can't change anything.

You OUGHT TO STUDY / OUGHT STUDY / OUGHT TO STUDYING for the maths exam - otherise you'll fail.

My mum MADE ME TO TIDY / MADE ME TIDY / MADE ME TIDYING my room before I went out.

I FIND IT DIFFICULT SOLVING / FIND IT DIFFICULT TO SOLVE maths puzzles.

It ISN'T WORTH DOING / ISN'T WORTH TO DO a plan - it's too much trouble.

I'D RATHER LISTENING / I'D RATHER LISTEN / I'D RATHER TO LISTEN to nails on a blackboard than reggaeton.

IT'S NO USE TO PUT ON SUNCREAM / IT'S NO USE PUTTING ON SUNCREAM after you are burnt.