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Ex9: Past simple → present perfect.
1. We started learning English two years ago.
We ( have ) ...........................................
2. He began writing articles when he was a student.
He ( write ) ...........................................
3. My father has worked for this company for ten years.
My father ( start ) .......................................
4. The last time it rained was two months ago.
It ( rain not ) .........................................
5. I haven’t written to him since last month.
I last ( write ) .........................................
6. The last time we talk to John was last Christmas.
We ( have not ) .......................................
7. They haven’t gone camping since they were in the seventh form.
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