1. She was unable to find assistance.
1... She was unable to find employmet.
2. If they can succeed in Americn, they can succeed here, too.
2... If they can succeed in Americn, they can be successful here, too.
3. The other day we had some visitors from France.
3.... The other day we had some tourists from France.
In the above sentences , which three sentences sound more natural.
I am ask to help solve these problems, but I find them very tricky.