According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern ----ADY. That is, seven letter words with 5th letter A and 6th letter D and 7th letter Y. In alphabetical order, they are:
already
byrlady
dramady
thready
tribady
unready
soldier
teddies
ditches
medical
ardvark
Oedipal
Seven letter words that can be made from these letters are:AddressAdverseDreamedDressedEvadersMaddersSeamersSmeared
diggers
watched.
Here are some 7 letter words that end in D: excited seafood admired
It is a question where you have to take the single letter and turn it into an entire word using the letter as the first letter of the word. You need to make the phrase make sense. So for your answer to that one you had, it would be '7 Days of the Week'.
battledbottledclothedcustardcontendfrettedleotardmottledmustardnettledpretendrattledsettled