I guess, it's not too bad for a non-native speaker.
Minor feedback:
1. The correct answer for "Lethargic" is "Affected by lethargy". I think, definitions should not use words that share common root with the defined word, because:
a. it makes guessing too easy
b. it basically becomes a circular definition which is meaningless
2. Options almost always include 1 correct answer, 1 direct opposite and 2 completely random. Once you learn to recognise it, you can easily rule out 2 random options and have a 50/50 guess.
Core Basics 19/20
Intermediate 17/20
Advanced 19/20
Expert 14/20
Grandmaster 12/20
I guess, it's not too bad for a non-native speaker.
Minor feedback:
1. The correct answer for "Lethargic" is "Affected by lethargy". I think, definitions should not use words that share common root with the defined word, because:
a. it makes guessing too easy
b. it basically becomes a circular definition which is meaningless
2. Options almost always include 1 correct answer, 1 direct opposite and 2 completely random. Once you learn to recognise it, you can easily rule out 2 random options and have a 50/50 guess.