Question

Don't travel.........high speed (preposition)​

Answer 1

Don't travel at high speed.

Explanation:

• Prepositions and post positions, combined known as ad-positions, are a group of words used to depict spatial or temporal relations or mark different semantic roles.

• Prepositions show relationships between other words in a statement.

• Many prepositions have many definitions, so the meaning alters quite a bit in various contexts.

• Finishing a statement with a preposition is not taken as a grammatical error.

Answer 2

Correct preposition:

Don't travel at high speed.

Explanation:

• The preposition is used with noun to link the object, verb and subject.
• It is always a small word. They are generally preceded by noun. Sometimes, the sentence ends with preposition.
• There are types of preposition such as direction, location, time and space.
• Since, the word "high speed" defines the position of the needle in speedometer. The preposition "at" is used which define the specific position of something.