Final answer:
Understanding the correct spelling of words in English is vital, and identifying letter combinations such as 'b' helps students learn proper spelling through exercises like underlining these letters in different words.
Step-by-step explanation:
In English language studies, learning the correct spelling of words is important for clear and effective communication. For example, to practice spelling the letter combination 'b', students may be asked to underline or identify this combination in various words. A sentence that demonstrates the use of this concept might be: 'She was able to distinguish the subtle differences between bubble, scribble, and giggle, which all contain the letter 'b'.'