Let's see if anyone in this community can answer this question on a GED pretest :-)
Sentence 8: There is a disadvantage to these batteries due to the fact that they require frequent recharging.
If you rewrote sentence 8 beginning with:
One disadvantage to these batteries is
the next words should be:
(1) recharging due
(2) that they
(3) besides the fact
(4) even though they
(5) resulting in