The sentence "You can park on _____ side of the street" requires a word to indicate which side(s) are available for parking. The options suggest different quantities or choices.
The word 'either' is the most appropriate determiner as it fits the context of choosing between two options (the two sides of the street) and is grammatically correct in this sentence structure.
A policeman was asked to chase a thief. Before the policeman started the chase, he realised that the thief was 200 metres ahead of him and was running at a speed of 16 km/h. The policeman started the chase at a speed of 20 km/h. How far will the thief run before he is overtaken by the policeman?