Question
In the question below, a sentence is given with five
words numbered and highlighted in bold. From the options, choose the pair of words that should be interchanged in order to make the sentence grammatically and meaningfully correct . (1) Delivering enough food to (2) requires the world’s population (3) feed farmers to overcome a (4) challenges of unpredictable (5) series , related to factors such as climate change.Solution
​ (c) is the right answer. We need to interchange (2) REQUIRES with (3) FEED. We need a verb in the base form to fit in the infinitive construction TO+VERB. We need to interchange (4) CHALLENGES with (5)SERIES.Â
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