Two entries in this grid are not quite right. One of them is missing a word that should go after the word that appears in the grid, and the other one is missing the same word, but this time it should go before the word that appears in the grid. What's the missing word?
Key in which Kathy Selden tells Lina Lamont to tell the conductor to play "Singin' in the Rain" (which is apparently a song everybody knows) at the end of "Singin' in the Rain"
7A
Longtime game show co-host who holds the Guinness World Record for most frequent clapper in television history