Answer: was -> Cấu trúc thì Quá khứ đơn với tobe: S + was/were… @ Dấu hiệu: yesterday – It là danh từ ở ngôi số ít -> dùng tobe “was” Trả lời
It (be) …was…sunny yesterday *** Áp dụng : Thì quá khứ đơn ( Tobe ) – DH : yesterday +) S + was / were + O/N -) S + was / were + not + O/N ?) Was / were + S + O/N ? He / she / it : Was I / you / we / they : Were Trả lời
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