Chia đúng dạng từ trong ngoặc

13. This shop attracts a lot of ________________ .  (foreign)

14. Ben is _____________ in learning German.  (interest)

15. Don’t ______________________ the room without permission. (entrance)

16.There's no easy ______________________to this problem. (solve)

17.____________________, she has recently had three accidents. (fortune)

18. People go _______________when they have a day off. (picnic)