From the words lettered A to D, choose the word that best completes each of the following sentences:
.............he comes, tell him I have left
Answer Details
The best option to complete the sentence is "In case". This is because "in case" means "if it happens that" or "if", and is commonly used when referring to a situation that may happen in the future. In this sentence, the speaker is asking the listener to inform someone that they have left when he arrives, so it makes sense to use "in case" to indicate that the arrival of the person is anticipated. Option A "should" is incorrect because it does not convey the same meaning as "in case". Option B "Should in case" is redundant and not a common phrase in English. Option D "whether" is incorrect because it implies a question or doubt, and does not fit the context of the sentence.