Misc: in what key is the dialtone of a telephone?

Questions

Three of the following U S Presidents appeared at one time or another on what's my line which one did not Jimmy Carter, Gerald Ford, Ronald Reagan, George Bush?

Three under par on a hole of golf is called a(n) __________?

Three fourths of household _____ is used to flush the toilet & take baths & showers?

Throat, foxing, & platform are parts of a(n) ________?

Through what were dead Egyptian pharaohs' brains extracted?