2 Underline the correct prepositions in these sentences. 1 Walk through / near reception, and take the lift to / at/ in the third floor. 2 Go around / along / past this corridor, and it's the third door on/ at the left. 3 If you go past/ through / behind the swing doors, you'll see the waiting room. 4 The toilets are at the bottom of / over the stairs. 5 Physiotherapy is in front of /opposite this department, so just go across / out of the corridor. 6 Go past/down the restaurant, take the stairs up to / along / on the second floor, and the ward is out of/ opposite the lift.