1. I ………studied……...(study) Vietnamese for the last 20 years.

2. We…………have knew..…..(known) each other for 5 years.

3. I…………am sleeping………....(sleep) for 3 minutes now.

4. How long you ………Have/learned……….(learn) Japanese? I…………have learned……..( learn) it since 2015.

5. She……bought…………...(buy) that bike for 4 months.

6. I……………sleep……..(sleep) for a long time.

7. We…………have lived……..(live) here since 2018.

8. He already……………has read…....( read) that blog for 2 months.