In Prepositions^x, Present perfect^x, Past perfect^x

Applicant: Hello. I'm here for that job for which you need a technician. My grammar is good. For example, I never end a sentence with a preposition. *smile*Employer: Oh, that don't matter. *smile* We gotta do some stuff with computers, websites, y'know, crap like that. *light a cigar*...

i. Our basketball team tried hard but was defeated in the long run. Nobody could say anything. "All that can be done has been done," said the coach.can I change it to "had been done"? As I think it is a past event.-- No. It is not a past event. Be carefula bout can and has done. It is completely...