Her bank account was low, and her credit cards were at their ...

[naturalchemist]

Her bank account was low, and her credit cards were at their limits; this
  bothered Leona.
 
  Correct any pronoun use errors in the following sentences by crossing out the in
  correct pronoun and writing in the correct one above it. In some cases you may have
  to rewrite part of the sentence. If the sentence is correct, do nothing to it.

Question 2

We hosted the gala party for the new Macintosh line all by ourself.
 
  Correct any pronoun use errors in the following sentences by crossing out the in
  correct pronoun and writing in the correct one above it. In some cases you may have
  to rewrite part of the sentence. If the sentence is correct, do nothing to it.

[Smiles0805]

Answer to Question 1

Leona was worried because her bank account was low and her credit cards were at their
limits.

Answer to Question 2

We hosted the gala party for the new Macintosh line all by ourselves.

[naturalchemist]

Excellent

[zacnyjessica]

Great answer, keep it coming