When looking back at the events the minister of foreign affairs [ ] less aggressive speeches (to make) (could|should) have made In retrospect, the government [ ] more money on education while it could afford it before the crisis (to spend) (should|ought to) have spent Surely by the end of the past century public service [ ] a higher level of healthcare than what we have currently (to provide) (could not|couldn't|cannot|can't) have provided What a shame! This political party [ ] so many resources on the latest electoral campaigns (not to waste) (should not|shouldn't) have wasted It's obvious people [ ] what was going on at the time (not to understand) (could not|couldn't|cannot|can't) have understood Given his experience I'm certain our CEO [ ] confident of his success even before knowing the results (to feel) must have felt The machine was serviced last week, it [ ] again already (to break down) (could not|couldn't|cannot|can't|should not|shouldn't) have broken down The new manager failed to meet deadlines. I'm sure the previous manager [ ] the project on time (to complete) would have completed We're sorry to hear that: you [ ] the contract in details instead of rushing to sign it (to read) should have read Their product is not very competitive, our sales [ ] last year only because of them (not to drop) (could not|couldn't|cannot|can't) have dropped