Final answer:
Explanation of using 'for' or 'since' in present perfect sentences.
Explanation:
For or since is used in present perfect sentences to indicate the time period.
- We have had this car for years.
- We have known each other since we were in school.
- She hasn't eaten anything this morning.
- It hasn't rained for a long time.
- We have been together for over ten years.
- We haven't seen John since last July.
- I have worked in this bank for 25 years.
- We have worked in this bank since it first opened.
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