1.am studying

2.is lying (at the moment → thì HTTD)

3.work (usually → thì HTĐ)

4.rains (always → Thì HTĐ)

5.are saying  - is talking  ( để nói về hành động đang xảy ra → Thì HTTD)

6.currently writes

7.do you want ( một lời đề nghị  → HTĐ).

8.makes

9.am having (look ! → Thì HTTD)

10.am holding ( look → thì HTTD)

11.makes - doesn't make

12.is falling

13.are becoming 

14.needs 

15.doesn't taste

16.see

17.sounds

18.reads - think - is reading

19.take

20.does your brother do