Synonyms and Antonyms — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Replace 'kids' with a more formal Grade 5 synonym: The children gathered in the library for the assembly.
'Children' is the formal register synonym for 'kids' and fits a Grade 5 announcement tone.
2. Replace 'got' with a formal Grade 5 synonym: The committee obtained permission to extend the deadline.
'Obtained' is a formal synonym for the casual 'got' and matches official writing in Grade 5.
3. Replace 'mad' with a more formal synonym: The principal was displeased about the broken window.
'Displeased' is a formal-register synonym for 'mad' and is appropriate in Grade 5 reports.
4. Replace 'tons' with a formal Grade 5 synonym: The library has a vast collection of historical books.
'Vast' is the formal Grade 5 synonym that replaces the casual exaggeration 'tons'.
5. Replace 'fix' with a formal synonym: Engineers will repair the bridge before reopening it to traffic.
'Repair' is the formal Grade 5 synonym used in news and technical contexts.
6. Replace 'big deal' with a formal synonym: The discovery was a significant event for the science community.
'Significant' is the formal-register synonym for 'big deal' that suits Grade 5 academic writing.
7. Replace 'show' with a formal synonym: The data will demonstrate the trend over the past decade clearly.
'Demonstrate' is a formal synonym for 'show' used in Grade 5 reports and arguments.
8. Replace 'help' with a formal Grade 5 synonym: The volunteers will assist residents during the storm.
'Assist' is the formal-register synonym for 'help' appropriate in Grade 5 official writing.
9. Replace 'tell' with a formal synonym: The author will inform the audience about her research process.
'Inform' is the formal-register synonym for 'tell' that fits a Grade 5 presentation tone.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
kids
→ children
repair
got
→ obtained
displeased
mad
→ displeased
obtained
fix
→ repair
children
Matching casual to formal synonyms helps Grade 5 students recognize register shifts in writing.