Word before "a will" and "a way"

• "___ an idea!"
• "___ no doubt"
• "Ay, ___ the rub": Hamlet
• Start of a Christmas reminder
• Often-misspelled contraction
• "___a Kind of Hush" (hit for Herman's Hermits)
• " . . . ___ the rub": Hamlet
• "__ a place for us ...": "West Side Story" lyric

Wiktionary Word definitions in Wiktionary
contraction (label en informal) there is; there's. n. (plural of there English)