English Language Substitution Drills

💡 Practice these "if" clauses by replacing the underlined words with the given substitutions. Pay attention to the structure and meaning.

💡 Use the "while" structure to describe two simultaneous past actions. Replace the underlined words with the given substitutions.

💡 Practice making logical conclusions using "must be" based on evidence. Replace the underlined parts with the given substitutions.

💡 Practice these simple substitutions to improve your vocabulary and sentence structure flexibility.