5. throws- threw- never puts

6. begins- began- has already begun

7. writes- stayed- wrote- has written

8. see- saw- has seen

9. costs- costed

10. have- had- have had

11. doesn't drink- drank- drinks

12. was- didn't give- went- gave- have given- started

13. sold- sell

14. heard- Have you ever heard

15. has known- don't know- knows

16. felt- feels

5. throws- threw- never puts - has thrown 

-> ( HTD - always - S là số ít - V thêm s/es ) ; ( QKD - last night -V2 ); ( HTD ) ; ( HTHT - so far - S là he - has - V3 ) 

6. begins- was begining - has already begun 

-> ( HTD - sometimes  - S là số vật - V thêm s/es ) ; (  QKTD - có Tg cụ thể trong QK - S là vật - was - Ving ) 

7. writes- stayed- wrote- has written

-> ( HTD - sometimes - S là số ít - V thêm s/es ) ; ( QKD - last night - V2 ) ; ( HTHT - serval ) 

8. see- saw- have seen

-> ( HTD - always - S là I - V nguyên ) ; ( QKD - some days ago - V2 ) ; ( HTHT - S là I - have - V3 ) 

9. costs- costed

-> ( HTD - S là số vật - V thêm s/es ) ; ( QKD - last year - V2 )

10. have- had- have had

( HTD - S là I - have ) ; ( QKD three days ago - V2 ); ( HTHT - serval times - S là I - have - V3 ) 

11. doesn't drink- drank- has drunk 

-> ( HTD - sự thật / điều hiển nhiên - S là số ít - Câu "-" - doesn't - V nguyên ) ; ( QKD - last night - V2 ) ; ( HTHT - S là he - has - V3 ) 

12. was- didn't give- went- gave

-> ( QKD - ns về một chuỗi sự việc trong QK ) ; have given- started

13. sold- has sold

-> ( QKD - yesterday - V2 ) ; ( HTHT - this is the first time - S là số ít - V3 ) 

14. heard- Have you ever heard

->( QKD - V2 ) ; ( HTHT - câu hỏi - S là you - Đảo have lên đầu - V3 )

15. has known- hasn't known - knows

-> ( HTHT - for a long time  ) ; ( HTD - sự thât - S là số ít - V thêm s/es ) 

16. felt- feels 

-> ( QKD - yesterday - V2 )