Complete the dialogue with the Present Perfect or the Simple Past of the verbs in brackets

complete the dialogue with the Present Perfect or the Simple Past of the verbs in brackets
Minh: i (13. just, hear) ........ that Hung is in Australia.
Mai: oh, (14. you/ not know) ........ that? he (15. fly) ........ there at the beginning of the month.
Minh: (16. you/ hear) ........ from him? dose he like the life there?
Mai: yes, i (17. get) ........ a letter last week. he (18. tell) ........ me about his study. but the (19. not say) ........ whether he (20. like) ........ the life or not. Perhaps it's too early to say. he (21. be) ......... there for only three weeks. he (22. never/ be) ........ to a foreign country before