Question

Levees were built to keep New Orleans from flooding.

They were not strong enough to withstand Hurricane
Katrina.
however therefore moreover
moreover furthermore joining words
Use one of the joining words to connect the ideas. Your response may be one
sentence or two.

Answer 1

However

Step-by-step explanation:

Levees were built to keep New Orleans from flooding. However, they were not strong enough to withstand Hurricane Katrina.

Past tense indicated by the use of the word "were." and however is also past tense.