38 баллов всего за 5 предложений! Помогите, пожалуйста, выбрать правильный ответ!

It’s easy to please/pleasing him.
He is very bad at set/setting objectives and fulfil/fulfilling them.
It is difficult to work/working all night long.
We suggest to go/going on a trip this summer.
The advantage of use/using alternative sources of energy is vivid.