My brother has been working at the factory since 1999. 1 Has your brother been working at the factory since 1999? 2 My brother has been working at the factory since 1999, hasn't he? 3 Who has been working at the factory since 1999? 4 Has your brother been working at the factory since 1990 or 1999? 5 Where has your brother been working since 1999?
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My brother has been working at the factory since 1999.1 Has your brother been working at the factory since 1999?
2 My brother has been working at the factory since 1999, hasn't he?
3 Who has been working at the factory since 1999?
4 Has your brother been working at the factory since 1990 or 1999?
5 Where has your brother been working since 1999?