Fill in the blank with the appropriate preposition:As a person of high moral principles, she would never descend ___ cheating or lying to get ahead in life.

• Descend to: 
English Meaning - To behave badly in a way that other people would not expect you to.
Bangla Meaning - নিজেকে নিচে নামানো; নীচ হওয়া। 
Example - I never thought she would descend to stealing.

Complete Sentence - As a person of high moral principles, she would never descend to cheating or lying to get ahead in life.

এছাড়াও, 
• Descended from:
Meaning - উদ্ভূত/সম্ভূত হওয়া; বংশধর হওয়া; (সম্পত্তি, অধিকার, গুণাবলি) উত্তরাধিকারসূত্রে আসা; বংশানুক্রমে বর্তানো।
Example - He is descended from an aristocratic family. 

• Descend on/upon: 
Meaning - অপ্রত্যাশিতভাবে আবির্ভূত হওয়া। 
Example - My sister’s family is descending on us at the weekend.

Source: 
1. Cambridge Dictionary. 
2. Accessible Dictionary by Bangla Academy.