I [ ] you that you are dismissed (to regret + to inform ← present simple)	regret to inform
Please, [ ] an e-mail to confirm the order (to remember + to send ← imperative)	remember to send
I now [ ] my boss I don't feel ready for the presentation (to regret + to tell ← present simple)	regret telling
The board [ ] shareholders to take over a competitor but failed (to try + to convince ← past simple)	tried to convince
I'm sure I [ ] to this workshop for a long time (to never forget + to come ← future simple)	will never forget coming
The assistant [ ] a copy of the contract (to forget + to send ← past simple)	forgot to send
The negotiations had lasted for a long time so we decided [ ] lunch (to stop + to have ← infinitive)	to stop to have
I [ ] the order by e-mail but I can't find it any more (to remember + to confirm ← present simple)	remember confirming
Our suppliers are late again so we've all agreed that we [ ] from them (to stop + to buy ←  future simple)	('ll|will) stop buying
We've [ ] suppliers to cut costs but the first one was the most reliable one (to try + to change ← past simple)	tried changing