Ex1: Chọn câu có cùng ý nghĩa với câu cho sẵn : 1. The last time I ate sushi was the last summer. A. I haven eaten sushi since the last summer . B. I haven't eaten sushi since the last summer. 2. I last saw her on Monday. A.I haven't seen her since monday. B.I have seen her since Monday. 3.I haven't watered this tree was a week ago A.The last time I watered this tree was a week ago. B.The last time I didn't water this tree was a week ago, 4.I started collecting stpams last winter. A.I have collected stamps since last summer. B.I have started collecting stamps since last summer . Lưu ý : chỉ cần chọn đáp án đúng , ko cần chéo đề bài

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