Answer:
1. he said that he didn't see that movie last week.
2. she was ready to go when we arrived.
3. on saturday night my family and i ate seafood in the restaurant.
4. the man stood there when Mr. aril called him.
5. the students were so serious in preparing for the examination.
6. my sister wasn't asleep when my mother came last night.
7. the children weren't happy when they lost their ball on the river.
8. marcel met my sister in the concert last month.
9. the movie was not interesting enough that many people left before it ended.
10. the chocolate melted because it was so hot outside.
hope this was helpful! <3