Pieces of a cot are subject to טומאה .

1.   ?    True, any piece.
2.   ?    True, so long as they are useful.
3.   ?    False.
4.   ?    Machlokes A&B.
5.   ?    Machlokes B&C.

A סוכה cut from within a haystack is Pasul.

1.   ?    True.
2.   ?    Only if there is no Tefach-deep (and 7x7 Tefachim large) hole.
3.   ?    Only if there is no 3 Tefachim-deep (and 7x7 Tefachim large) hole.
4.   ?    Machlokes A&B.
5.   ?    Machlokes B&C.

A suspended wall of a סוכה may be ______ .

1.   ?    less than 3 Tefachim off of the ground.
2.   ?    less than 10 Tefachim off of the ground.
3.   ?    As high as one likes.
4.   ?    Machlokesd A&B.
5.   ?    Machlokes A&C.

The residents of adjoining courtyards may draw water from a shared well, provided they made a partition for this purpose.

1.   ?    True.
2.   ?    False.
3.   ?    If there is already an Eiruv no need.
4.   ?    C, Machlokes A&B.
5.   ?    Sofeik.

This wall must extend down to the water.

1.   ?    True.
2.   ?    Only to the tip of the well.
3.   ?    3 Tefachim into the water.
4.   ?    Machlokes A&B.
5.   ?    Machlokes B&C.

A mat ארבעה ומשהו may be used for a wall of the סוכה.

1.   ?    True, placed פחות משלשה למטה .
2.   ?    True, anywhere.
3.   ?    False, would require us to use לבוד twice.
4.   ?    Machlokes A&B.
5.   ?    Machlokes A&C.