1. takes (often -> HTĐ)

2. didn't watch (Last night -> QKĐ)

3. have studied (for half an hour -> HTHT)

4. is looking (Look! -> HTTD)  

5. Have you known (for a long time -> HTHT)
6. plays  (usually -> HTĐ) 

7. is washing (At the moment -> HTTD)

8. has fallen (three times -> HTTD)

9. has she read (until now -> HTHT)

10. has taught (for 20 years -> HTHT) 

``

HTĐ: S+V/Vs/Ves+O

HTTD: S+is/am/are+V-ing+O

HTHT: S+has/have+V3/ed+O

QKĐ: S+V2/ed+O

1. takes `=>` DHNB often

2. didn't watch `=>` DHNB last night

3. have studied `=>` DHNB for half an hour

4. is looking `=>` DHNB look

5. Have you known `=>` DHNB for a long time

6. plays `=>` DHNB usually

7. is washing  `=>` DHNB usually

8. has fallen `=>` DHNB three times

9. Has read `=>` DHNB until now

10. has taught `=>` DHNB for 20 years