Mai watched TV. she heard the bell ring. (When) When………………………………………………………………….
2 câu trả lời
Mai was watching TV when she heard the bell ring.
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xin hay nhất và 5 sao
$\text{⇒ When Mai was watching TV, she heard the bell ring.}$
`\text{Cấu trúc quá khứ tiếp diễn: S + was / were + Ving + O}`
$\text{Dịch: Khi Mai đang xem TV, cô ấy nghe tiếng chuông reo.}$