Fill in the space with an infinitive: It is easy __________ but hard to finish.

Correct answer: to begin

Explanation: The blank requires an infinitive verb that contrasts with 'to finish' in the sentence 'It is easy __________ but hard to finish,' implying an action that is simple to start but difficult to complete. 'To begin' fits best, as it means to start something, which is often easier than completing it, aligning with the sentence's contrast. to end ❌: Means to conclude, similar to 'finish,' so it lacks contrast. to fall ❌: Refers to dropping or failing, irrelevant to the context. to lose ❌: Means to misplace or fail, not fitting the contrast with 'finish.' to begin ✅: Means to start, contrasting perfectly with 'hard to finish.' Correct Answer: D. to begin