Answer:
1.dont have to. 2.musn’t 3.musn’t 4.don’t have to. 5.Don’t have to. 6.musn’t
Their dad was a worker on a ship, but then one day, the person working at the light house wasn't watching, and the ship crashed. They then wanted to become a lighthouse keeper.
Answer:
"I'm still young, but I work on my memory daily so I don't become senile."
Explanation:
Senile means denoting to old age and that sentence correctly uses it
