Giải thích cho mình với nha tại mình không hiểu á!Canh thiu các bạn!!!! Q1:The_____of the letter is beyond doubt A.Authenticity B.Authentic C.Authenticate D.Authentically Q2:Have you finished______that magazine? A.read B.to reading C.reading D.to read Q3:After/race/I/tired/Anne A.After the race i were more tired than Anne B.After the race I was more tireder than Anne C.After the race I was tireder than Anne D.After the race I was more tired than Anne