alleryसही प्रपोजीशन का चयन करें: 'She is good ___ mathematics.'
Aat
Bin
Cfor
Don
Answer & Solution
Correct answer: A. at
'Good at' (किसी कौशल/विषय में दक्ष होना)।
**तुलना करें:** 'good in' (कक्षा/समूह में), 'good for' (उद्देश्य के लिए), 'good on' (संयोग/भाग्य — अनौपचारिक)।
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