1. She has not eaten eel soup before 
2. She has written for 30 minutes 
3. They have studied English since they were in grade 3
4. I haven't seen him for 3 weeks
5. I haven't watched this movie for 6 months
6. She hasn't seen her parents for a long time
7. How long have you read this book ?
8. I haven't been abroad before
9. The last time I went to the zoo was last year
10. I last met my aunt when I was 10 years old
11. She hasn't worked with foreigners before
12. She has cried for two hours
13. We have chatted on the phone since it began to rain
14. We have known each other sine we were at university
15. She hasn't phoned her parents for 3 weeks
16. We haven't gone to this restaurant for a long time 
17. How long have you had this laptop ?
18. I haven't joined such an exciting party before