23. Has been (for seven hours)

24. Have you done (yet) - finished (ago)

25. have ever eaten (This is the first time + have/has PP)

26. was (When)

27. Saw (yesterday)

28. was (yesterday)

29. have never seen (since)

30. hasn't played (since)

#CHÚC BẠN HỌC TỐT 

23. Câu này là has been 

24. Have you done your homework yet ? - Yes , I finished it an hour ago

25. This is the first time i have eaten that kind of food

26.When we arrived at the restaurant, the place was full.

27. Yesterday, we saw a small grocery store

28. I was late for school yesterday

29. They have never seen their old friends since they left the university.

30. My father hasn’t played any sport since last year

CHÚC BẠN THI TỐT NHEEEE :3333