we / know each other / we were children   - We've known each other since we were children., the children / play computer games / two hours   - The children have been playing computer games for two hours., your sister / have that hairstyle / a long time?   - Has your sister had that hairstyle for a long time?, I / love her / the first day we met   - I've loved her since the first day we met., my internet connection / not work / yesterday   - My internet connection hasn't been working since yesterday., I / work for a charity / eight years   - I've been working for a charity for eight years., how long / you / wait?   - How long have you been waiting?, I / be a teacher / three years   - I've been a teacher for three years., it / snow / 5:00 this morning   - It's been snowing since 5.00 this morning., Sam / not study enough recently   - Sam hasn't been studying enough recently., you / live in Chicago / a long time? - Have you been living in Chicago for a long time?,

B1 present perfect simple vs continuous + for/since

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