Verb এর সাথে s / es / ies কখন বসাতে হয়, third person singular number কি? খুটিনাটি || Sahin's English tense, 3rd person singular number, sahin sir, sahin's English, sahin's English tense class, sahin sir tense class, hsc, hsc english, hsc english grammar, hsc english 2nd paper