In the question below choose the word(s) or phrase(s) which best fill(s) the gap:
It was difficult to _____ a man walking on the moon two centuries
Answer Details
The best word to fill the gap in the sentence is "imagine."
"Imagine" means to form a mental image or concept of something that is not present or that is not yet a reality. In this context, the sentence is referring to the difficulty of picturing a man walking on the moon two centuries ago when such a feat was not yet possible.
Therefore, the correct sentence is: "It was difficult to imagine a man walking on the moon two centuries ago."