EX14. Chuyển các câu sau từ thì quá khứ đơn sang thì hiện tại hoàn thành sao cho nghĩa của câu không thay đổi.
1. The last time I played the violin was 2 years ago.
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2. The last time the team won the prize was a long time ago.
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3. She last did charity work 2 years ago.
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4. The last time I wrote a letter was 5 years ago.
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5. My father stopped smoking in 2014.
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6. I last donated my blood 7 months ago.
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7. When did you start doing charitable work?
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8. The last time she involved in community service was 2 months ago.
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9. She said: “I began working as an activist when I was 20 years old.”
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10. My best friend gave up eating fast food last year.
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1. I haven't played the violin for 2 years.
2. The team haven't won the prize for a long time.
3. She have done charity work since 2 years ago.
4. I haven't written letter for 5 years.
5. My father hasn't smoked since 2014.
6.I haven't donated blood for 7 months.
7. How long have you done charitable work?
8. She has involved in community service since 2 months ago.
9. She said: "I have worked as an activist since I was 20 years old."
10. My best friend hasn't eaten fast food since last year.
