I- Put the verbs in brackets into the present perfect of the present perfect continuous tense

1, have slept

2, has been sleeping

3, has been riding

4, have ridden

5, has been making

6, has taught / has been teaching

7, have taught - have never met

8, have you been being - have been pumping

9, have been walking

Giải thích: Câu này dùng Hiện tại hoàn thành tiếp diễn sẽ hay hơn vì nó nhấn mạnh hoạt động chạy kéo dài

10, have been making

11, have you made - have made

12, has eaten

13, hasn't stopped

14, has been drinking

15, have only heard

16, have heard

17, have been polishing

18, have been working -have said

19, has taught

20, have pumped

21, have been looking - haven't founded

22, has coughed 

23, Have you heard - have known 

1, have slept

2, has been sleeping

3, has been riding

4, have ridden

5, has been making

6, has taught 

7, have taught - have never met

8, have you been being - have been pumping

9, have walked

10, have been making

11, have you made - have made

12, has eaten

13, hasn't stopped

14, has been drinking

15, have only heard

16, have heard

17, have been polishing

18, have been working -have said

19, has taught

20, have pumped

21, have been looking - haven't founded

22, has coughed 

23, Have you heard - have known