23. I_______________________(have) a party this weekend. Would you like to come? 24. Philip ___________ (have) problems with his car again. 25. You _________________(look) a bit sad today. Is anything the matter? 26. My parents ______________________(live) in Spain for the last 15 years. 27. The next train ______________________(leave) this evening at 17.00. 28. I_________________(phone) you when I get home. 29. He ______________________(meet) Peter in town this afternoon. 30. I'll come home as soon as I _____________________(finish) work. 31. You _______________(be) tired out after you have been working all night. Giải thích giúp mình luon nha, mình cảm ơn:>