[Q]: How does the sentence end?

We wanted to go and take the plastic to the dump instead of all of the wood, because the

[A]: plastic is lighter.

[Q]: How does the sentence end?

The family chocolate recipe had to have the root and the brown sugar removed because the

[A]: root was too bitter.

[Q]: How does the sentence end?

Elena asked Erin if she could borrow her deodorant, but

[A]:
Erin had forgotten to bring some.