cho mình hỏi mấy câu này vs ạ 1/ in 1875 archeologist... the ruins of olympic stadium in greece A. discovered B. were discovering C. has discovered D. had discovered 2/ he said he... his homework since 7 o' clock A. did B. has done C. had been done D.. has been doing
1 câu trả lời
1A
In 1875 archeologist discovered the ruins of olympic stadium in greece
thì quá khứ đơn (In 1875)
2B (câu B phải sửa thành had done)
He said he had done his homework since 7 o' clock
thì quá khứ hoàn thành chuyển sang câu gián tiếp
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