IV.
1. He has never went abroad before.
2. The last time I seen him was 8 days ago.
3. How long have you have it ?
4. This is the first time Peter been to Viet Nam.
5. Nina is the most intelligent student in my class.
6. Shanghai is the nosiest city in this area.
7. I think robots will be able to do many things like humans do in the future.
$@Diiz$
