If the oxygen supply in the atmosphere _____ not replaced by plants , it would soon be exhausted.

Question

Accepted Answer

গ. were

ব্যাখ্যা: Second conditional sentence-এ 'if' যুক্ত clause-টিতে subjunctive mood হিসেবে 'were' ব্যবহৃত হয় (If + past subjunctive, would + base verb)।

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