"TER QUE" OR "TER DE " ?

VERB "TER " PLUS "QUE" ; "TER" PLUS "DE" :

To have to : either form may be used .

Examples : Tenho que estudar a minha lição

( I have to study my lesson )

Tenho de estudar a minha lição

( I have to study my lesson )

Ref. : bit.ly/2kMH6yk