Adverbs of frequency

Welke zin is juist?
1. He goes sometimes to a disco.
2. He sometimes goes to a disco.
Welke zin is juist?
1. They are never on time.
2. They never are on time.
Welke zin is juist?
1. They will never be able to do that correctly.
2. They will be never able to do that correctly.
Welke zin is juist?
1. Have they ever seen that film?
2. Have ever they seen that film?
Welke zin is juist?
1. They sometimes have problems with the law.
2. They have sometimes problems with the law.