Chia dạng đúng của từ trong ngoặc

16.We (not see) ………………………Jack for a long time. It’s 20 years since we last (see) ……………………… him.

17.My brother (work) ………………………as a teacher for ten years now.

18.………………………(Bill/ arrive) home yet?

Yes. He (arrive) ………………………home 3 hours ago.

19.I (like) ………………………action movie since I was a child.

20.We (have) ……………………… 4 tests so far this semester.

21.I (know) ………………………Jim since he (be) ………………………ten years old.

22. We (not see) ………………………Jim recently. The last time we (meet) ……………………… him was in April.