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15
×
Which type of clause, often beginning with 'which' and adding extra detail, always needs commas around it?
Defining relative clause.
Subordinate conjunction.
Non-defining relative clause.
Main clause.
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seesaw
Swap points!
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fairy
Take points!
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20
25
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shark
Other team loses 5 points!
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thief
Give points!
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25
15
×
Although the battery was old the robot still functioned perfectly.
Although the battery, was old the robot still functioned perfectly.
Although the battery was old the robot, still functioned perfectly.
Although the battery was old, the robot still functioned perfectly.
Although the battery was old the, robot still functioned perfectly.
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15
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When listing actions in a narrative (e.g., She ran, jumped, and scored), the commas help avoid...
pronoun errors.
missing articles.
run-on sentences.
subject-verb disagreement.
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15
×
The robot's casing made of reinforced carbon fibre resisted all damage.
The robot's casing, made of reinforced carbon fibre resisted all damage.
The robot's casing made of reinforced, carbon fibre resisted all damage.
The robot's casing, made of reinforced carbon fibre, resisted all damage.
The robot's casing made of reinforced carbon fibre resisted, all damage.
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15
×
In a date like "October 15, 2025," where are the commas required?
Only after the month.
Only after the year.
After the day and after the year.
Only after the day.
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15
×
Why is a comma needed after the transitional word Therefore when it starts a sentence?
Because it is a dependent clause.
It separates the transition from the main thought.
Because Therefore is a verb.
To separate two independent clauses.
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15
×
The programmer debugged the code cleaned the sensors and rebooted the system.
The programmer debugged the code cleaned the sensors and, rebooted the system.
The programmer, debugged the code cleaned the sensors and rebooted the system.
The programmer debugged the code cleaned the sensors and rebooted, the system.
The programmer debugged the code, cleaned the sensors, and rebooted the system.
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15
×
What punctuation mark is used to enclose a non-defining relative clause?
A single comma at the end.
A pair of semicolons.
A pair of commas.
A single dash.
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15
×
Before inserting the chip read the safety manual carefully.
Before inserting, the chip read the safety manual carefully.
Before, inserting the chip read the safety manual carefully.
Before inserting the chip read, the safety manual carefully.
Before inserting the chip, read the safety manual carefully.
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15
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Maria the lead engineer checked the hydraulics.
Maria the lead engineer checked, the hydraulics.
Maria, the lead engineer, checked the hydraulics.
Maria, the lead engineer checked the hydraulics.
Maria the lead engineer, checked the hydraulics.
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boom
Lose 50 points!
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fairy
Take points!
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25
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shark
Other team loses 25 points!
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lifesaver
Give 20 points!
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15
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The drone which was autonomous navigated the dense forest.
The drone, which was autonomous, navigated the dense forest.
The drone which was, autonomous navigated the dense forest.
The drone which was autonomous, navigated the dense forest.
The drone, which was autonomous navigated the dense forest.
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15
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Dr. Lee who invented the machine won a Nobel Prize.
Dr. Lee who, invented the machine won a Nobel Prize.
Dr. Lee, who invented the machine won a Nobel Prize.
Dr. Lee who invented the machine won, a Nobel Prize.
Dr. Lee, who invented the machine, won a Nobel Prize.
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15
×
What is the name for the comma used before the final conjunction in a list (e.g., A, B, and C)?
Appositive comma.
Serial comma.
Coordinating comma.
Oxford comma.
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lifesaver
Give 20 points!
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gift
Win 20 points!
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rocket
Go to first place!
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banana
Go to last place!
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