From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences. Our teacher kept us...

From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
Our teacher kept us kneeling...........the whole period.

Answer Details

The correct option is "for". "For" is used to indicate the duration of an action or event, and in this sentence, it shows the duration for which the students were kept kneeling.