Ex1: chọn đáp án đúng : 1. His mother hasn't prepared the meal ( already / yet ) 2. Tommy (worked/has worked ) for this company for 10 months but now he doesn't work here. 3. This machine (has worked/worked) for ten years so far. 4.Mr. Vu ( have found/founded )this non-profit organization to benefit the local community. 5.Jame's (not been / not ) a member of the volunteer club since he left school. 6.Her husband (has given up/gave up) smoking when they had their first child. 7.(Have you read / Didyou read ) this book yet? 8.I lost my key on my way home last night . Up to now I (dindn't find/ haven't found ) it LƯU Ý : KhÔGN CẦN CHÉP ĐỀ BÀI , CHỈ CẦN CHỌN CÂU TRẢ LỜI ĐÚNG

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