Viết lại câu: 1 .john cooked dinner and then cleaned the floor -->john 2.she made a birthday cake.then her son came home. -->by the time 3.peter prepared for the meal.then his mother got home. --> by the time 4.i helped my young brother with his homework and then washed the clothes. -->i
1 câu trả lời
1, John had cooked dinner before he cleaned the floor
2, By the time her son came home, she had made a birthday party cake
3, By the time his mother got home, Peter had prepared for the meal
4, I had helped my young brother with his homework before I washed the clothes
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