Question

(1)____(By / to) August 31st, 80 % (2)____ (of / from) New Orleans was Flooded, and many sections were (3)___( under / up) 4.5 meters (4)____(of / off) water

Answer 1

1 by 2 of 3 under 4 of

Answer 2

(1) By August 31st,

(2) of New Orleans

(3) under 4.5 meters

(4) of water

So, the complete sentence would be:

"By August 31st, 80% of New Orleans was flooded, and many sections were under 4.5 meters of water."