Bộ 5 đề thi cuối kì 1 Tiếng Anh 9 Friends Plus có đáp án - Đề 4

His lights are on so I’m pretty sure Dan is at home. (SINCE) Dan _______________________________________________ his lights are on.

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His lights are on so I’m pretty sure Dan is at home. (SINCE)

=> Dan _______________________________________________ his lights are on.

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Giải thích

must be at home since