useless trivia: What Word Means: Hove To?

Questions

"If I were --------------, would I be wearing this one?"- Abraham Lincoln (1809-1865)?

"I am proud of the fact that I never invented ------------."- Thomas Alva Edison (1847 - 1931)?

"If I'd known I was going to ---------------------------, I'd have taken better care of myself."- Eubie [James Herbert] Blake?

"If I'm not back in five minutes, ----------------."- Ace Ventura, Pet Detective?

"If it weren't for --------------, we'd all be watching television by candlelight."- George Gobel?