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. I'm sorry I can't f...

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.
I'm sorry I can't find..........of the two books you lent me.

Answer Details

The correct answer is "either". The sentence implies that there were two books lent, and the speaker is unable to find one of them. "Either" is used when referring to two things or people and means "one or the other of two".