Insert a, an or the if necessary: However, I took him to . . . meter, which is in . . . dark corner under . . . Stairs (. . . meters are usually in . . . dark corners under . . . stairs).

However, I took him to the meter, which is in a dark corner under the Stairs (meters are usually in dark corners under the stairs).

Dịch: Tuy nhiên, tôi đã đưa anh ta đến máy đo nằm trong góc tối dưới Cầu thang (máy đo thường ở góc tối dưới cầu thang).