It's a waste of timeC'est zéro
It's boringC'est barbant
It's difficultC'est difficile
It's easyC'est facile
It's fascinatingC'est passionnant
It's greatC'est génial
It's interestingC'est intéressant
It's not badC'est pas mal
It's not so great (word starts with t)C'est terrible
It's not so hot (word starts with s)C'est pas super
It's superC'est super
It's uselessC'est nul
What do you think of that/it?Comment tu trouves ça?
it's OKça va
it's coolC'est cool
what do you think of...?Comment tu trouves...?