Hello, here is the answer for this exercise :
1. When (Quand) did she leave her country? In 1920.
2. Who (Qui) did she travel with? Her parents.
3. How old (Quel âge) was she? 15 years old.
4. Where (Où) did she come from? Poland.
5. How many (Combien) languages were spooken at Ellis Island? More than 30.
6. How (Comment) did people react when they saw the statue of Liberty ? They cheered.
7. How much (Combien) did immigrants need to enter the US? 20 dollars.
8. What (Qu'est-ce que) are they doing? They're visiting a museum.
9. Why (Pourquoi) do they look worried? Because they don't know what's going to happen.
10. Which (Laquel(le)(s)) suitcase is it? My sister's.
Hope I helped u a lot!