distractors: through over back
sentence: As they grew, the girl was able to  lead  her birds to run across the grass, but she could not teach, them to  fly  .The little girl became increasingly worried about this, both when  awake  and in her dreams.Suddenly, she thought  [MASK]  a clever idea: she would fly a plane to guide them in  flight  .She asked her father for a plane and he made a small one for her.Caring about  her  safety, the father Hew the plane himself.However, the birds didn't  follow  him.They all slept in the grass  instead  .