1They simply can't afford to buy/buying any new players this season.
2 Do you fancy to go/going to the match on Saturday?
3The coach forced him to/to go on a diet because he was too heavy for his category.
4 I offered to fix/fixing his bike but he said he was going to buy a new one.
5I have done everything to encourage him not to do/not doing such a stupid thing again!
6Don't waste time taking up/to take up a new sport when you're so busy.
7This foundation aims to help/helping the best young tennis players.
