Why would they stop chopping wood for the Mizbeach on חמשה עשר באב ?

1.   ?    They always had enough.
2.   ?    There was a Nes an whatever they had sufficed.
3.   ?    Due to the heat of summer the wood would be wormy after that.
4.   ?    It wouldn't have time to dry properly.
5.   ?    It was too hot out.

All the clothing borrowed for Yom Kipur required Tevilah first

1.   ?    True.
2.   ?    Only from an Am ha'Aretz.
3.   ?    Not if they were folded in a closet.
4.   ?    Not if freshly laundered.
5.   ?    Machlokes C&D.

****הדרן עלך בשלשה פרקים וסליקא לה מסכת תענית****

1.   ?    !!!!!TRUE!!!!