Rewrite these sentences without changing the meaning

III. Rewrite these sentences without changing the meaning
8. This is the first time I have had such a delicious meal like this. (never)
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9. It is a long time since we last met. (haven’t)
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10. I haven’t been to North America before. (first)
→ ________________________________________________________________________
11. The last time I met my English teacher was 6 months ago. (haven’t)
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12. He has collected stamps for five years. (began)
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13. I have never met a more intelligent student than Jim. (most)
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