There’s a door at either end of the building?
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The building has two ends and two doors
- The building has two ends, but only one door
- The building has two ends, but I do not know which of the two has a door
- The building has many ending each and for all
The correct answer is: A
Explanation
Either as used before the first of two given alternatives. When it is used as a determiner, it refers to both choices or possibilities
This means that there are two alternatives. At each end of the building, there is a door.
Either is used only when there are two persons or things. The statement can be interpreted as
''There are two ends in the building, and each of the ends has a door.
There is an explanation video available .