Change this sentence into indirect speech that monkey's heart must be so sweet,the crocodile wife said.

The crocodile's wife said that that monkey's heart had to be so sweet

Must => Had to karena kalimatnya dalam bentuk present.

Maaf kalo salah

The indirect speech of "that monkey's heart must be so sweet," the crocodile's wife said." is:

The crocodile's wife said that the monkey's heart had to be so sweet.