- The students have completed their homework.
- The students have completed their homeworks.
- Raja Rammohan Roy was greatly pained when he heard the cries of widows being burnt on their husband's pyres.
- Raja Rammohan Roy was greatly pained when he heard the cries of widows being burnt on their husbands' pyres. Please suggest with explanation which is correct in 1&2 and 3&4.
Please suggest with explanation which is correct in 1 and 2.