1) Where does doctor work? a) b) c) d) 2) Where does librarian work? a) b) c) d) 3) Who uses this element? a) b) c) d) 4) Who works at school? a) Plumber b) Farmer c) Pilot d) Teacher 5) Pilot_______ at airport a) working b) worked c) works d) work 6) Babysister works_____ home a) in b) at c) the d) on

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