I have studied English for three years., , She has worked here since 2021., , We have known each other since first grade., , They have lived here for a long time., , He has been busy since this morning., , I have waited for ten minutes., , She has had this phone since January., , We have studied for two hours., , They have been friends since childhood., , My family has lived here for years., , I have known this teacher since last year., , She has been reading for two hours., .

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