EnglishooI am agree
Correct: I agree. Do not use am before agree.
Free English grammar practice
Common English Mistakes Quiz
Choose the correct sentence, see the mistake, and learn the simple rule. Start free, then login for the full practice set.
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8 free levels
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30 real mistakes
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Game score
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Grammar Quest
Mistake Battle
Score
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Combo
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Level 11 / 8
Verb use
Which sentence is correct?
Choose the correct sentence
She go to school
Correct: She goes to school. Add s after he, she, or it.
I have 20 years
Correct: I am 20 years old. Use am for age in English.
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How to use this tool
1
Answer the question before reading the explanation so you test your real instinct.
2
Repeat the quiz and notice which mistake types you miss more than once.
3
Use the grammar test and sentence builder next to turn corrections into active practice.
Quick FAQ
Is this common English mistakes quiz free?
Yes. You can answer the free questions without logging in.
What mistakes does this quiz teach?
It focuses on common learner mistakes in verbs, prepositions, word order, countable nouns, and everyday sentence patterns.