Ответ:

2) make a lot of new friends

3) start his new school

4) travel on the subway

5) see a famous movie director

6) have a picnic in Central Park

7) walk across the Hudson Bridge

8) visit his friends in Canada.

Ответ:

1. he has seen Niagara Falls
2. he hasnt visited his friends in Canada
3. he has made a lot of friends
4. he hasn't seen a famous movie director
5. he has had a picnic in the Central Park
6. he hasn't started his new school
7. he hasn't walked across the Hudson Bridge
8. he has traveled on the subway