1. has had <trạng từ for>
2. works
3. employ: thuê
4. bought <in năm → qkd>
5. is managing <trạng từ now>
6. came <có ago>
7. have been <Since + qkd, htht>
8. don't teach
9. collect
10. have worked <trạng từ for>
11. got
12. have enjoyed <HTHT since QKD>