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Câu hỏi:
Choose the correct answer: While I __________ the performance, I met one of my old friends.
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A.
watched
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B.
was watching
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C.
watch
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D.
am watching
Lời giải tham khảo:
Đáp án đúng: B
Cấu trúc về While
While + S + was/were + Ving, S + V2/ed.
Chọn B
Hãy trả lời câu hỏi trước khi xem đáp án và lời giải -
A.
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
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