Select the most appropriate option to fill in blank no.4.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. for.
The meaning of the given prepositions is:
- Over: extending directly upwards from.
- From: indicating the point in space at which a journey, motion, or action starts.
- At: expressing location or arrival in a particular place or position.
- For: intended to be given.
The given blank needs a preposition of ownership. Thus, for would be the most appropriate choice among the given options.
Therefore, the correct sentence is:
......Expert mechanics laboured for hours before they could find the cause of the mechanical
failure.