Analyzing the Sentence and Underlined Phrase

The original sentence is: "As he spoke about his achievements, his high claims amused us."

We are asked to look at the underlined part, "high claims," and determine if one of the given substitutions improves the sentence or if it is best left as is.

Understanding the Meaning of Claims

In this context, "claims" refers to assertions or declarations, likely about his achievements. The word preceding "claims" describes the nature or quality of these claims.

Evaluating the Options for "high claims"

Let's examine each option:

• (a) big

  If we substitute "big", the sentence becomes: "As he spoke about his achievements, his big claims amused us." While "big" can mean significant or large, "big claims" is not a standard idiomatic phrase in English to describe boastful or exaggerated statements.

• (b) tall

  If we substitute "tall", the sentence becomes: "As he spoke about his achievements, his tall claims amused us." The phrase "tall claims" is a well-established idiom in English. It means exaggerated, boastful, or difficult-to-believe assertions. Given that he is speaking about his achievements, making "tall claims" (exaggerated boasts) would certainly be a reason for others to be amused. This option fits the context well.

• (c) long

  If we substitute "long", the sentence becomes: "As he spoke about his achievements, his long claims amused us." "Long claims" could imply claims that took a long time to make or were lengthy in description. This doesn't convey the sense of exaggeration or boastfulness that would typically lead to amusement in this context. It is not a standard idiom.

• (d) No improvement

  The original phrase is "high claims". While "high" can relate to ambition or status, "high claims" is not the conventional idiom for exaggerated or boastful statements about achievements. The standard idiom is "tall claims". Therefore, the sentence requires improvement.

Comparing Options and Choosing the Best Fit

Based on the analysis, "tall claims" is the correct and standard idiom used to describe exaggerated or boastful statements, which perfectly fits the context of someone speaking about their achievements in a way that amuses listeners. The options "big claims" and "long claims" are not standard idioms for this meaning, and "high claims" is not the most accurate or common phrasing.

Thus, replacing "high claims" with "tall claims" improves the sentence significantly by using the correct idiom.

Conclusion

The best substitution for the underlined part "high claims" is "tall claims" because "tall claims" is a standard English idiom meaning exaggerated or boastful claims, which fits the context of someone speaking amusingly about their achievements.

Revision Table: Evaluating Claims

Additional Information: Understanding Idioms in English

Idioms are phrases or expressions where the meaning of the whole is different from the meaning of the individual words. Understanding common idioms is crucial for mastering English language usage and sentence improvement exercises. "Tall claims" is a classic example of an idiom where "tall" doesn't relate to physical height but to the perceived 'height' or exaggeration of the assertion.

Using the correct idiom makes sentences sound more natural and precise. Mistakes with idioms are common, which is why exercises like these are important for identifying and correcting them.