Possible Clues:

• ''I've __ Be Me''
• Must, nonstandardly
• 'Something's ___ Give'
• 'I've ___ Be Me' (1968 song by Sammy Davis Jr.)
• "___ go!" ("See ya!")
• "Ya __ believe!": 1973 Mets catchphrase
• '___ Catch 'Em All' (Pokémon theme song)
• Have to, informally
• "I ___ Feeling" (Black Eyed Peas hit)
• '___ Catch 'Em All' (Pokemon slogan)