Problem: How does the sentence end?

The skin was darker on Barry's arms than his legs because the 
Answer: arms were always exposed.

Problem: How does the sentence end?

The woman tried to pack her blowdryer in the suitcase but the 
Answer: suitcase was too small.

Problem: How does the sentence end?

Currently, Monica is looking to date again, while Maria is not, due to 
Answer: Maria being married.

Problem: How does the sentence end?

When the functions were calculated, it took longer than the equations, so the 
Answer:
equations were simple.