GIÚP MÌNH VỚI Ạ HỨA VT CTLHN VÀ 5* Ạ

28. Let me see all the letters you have written A. which B. when C. what D. who 29. People thavel to work by bus often buy tickets in advance C. which A. who D. when B. whom 30. The dictionary is on the table belongs to Loan A. which B. what D. this C. whose LEVEL B1 works in the city, ...