Viết lại câu không thay đổi nghĩa: 1. My father was pleased when he learned that I had passed the entrance exam to high school. - My father ...........2. Everybody had gone home when I came to the party. - As soon as...............3. This country is unsafe to visit during summer vacation. - It is ...........................4. There has been a dramatic increase in the number of people learning English. - The number of people........... ................ 5. Phong went to the beach after working hard for a week. - After ............

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