As soon as the thief saw the police, he ran away. (Simple)

♦ Complex to simple,

• Complex Sentence এ ‍as soon as থাকলে
- Simple Sentence এ as soon as এর পরিবর্তে on/ at the very moment of (সাথে সাথেই) বসে।
- On + Verb + ing Or, At the very moment of + Verb + ing
- এরপর as soon as যুক্ত clause এর বাকি অংশ বসে।
- প্রথম subject টি দ্বিতীয় clause এর subject হিসাবে বসে, এবং দ্বিতীয় clause এর বাকি অংশ বসে।

Complex: As soon as the thief saw the police, he ran away.
Simple: At the very moment of seeing the police, he ran away.

Or 
Simple: On seeing the police, he ran away.

• উল্লেখ্য যে অপশনে 'At the very moment seeing the police, he ran away.' আছে, কিন্তু যদি এখানে এর পরিবর্তে 'At the very moment of seeing the police, he ran away.' থাকত তবে সঠিক উত্তর হতো দুটোই অর্থাৎ Both A + B