Complete the sentence with the suitable modal: I ________ drink tea,…

The correct answer is Option (4) → used to

Complete sentence: I used to drink tea, but now I prefer coffee. The sentence sets the past habit (drinking tea) against the present ("but now I prefer coffee").

Option	Meaning and use	Example
(1) ought to	"Ought to" expresses duty or what is right. It gives no contrast between past and present.	You ought to thank her for her help.
(2) need to	"Need to" expresses necessity. Drinking tea is not a necessity being set against a preference.	You need to renew your passport this year.
(3) dare to	"Dare to" means to be brave enough to do something. No courage is needed to drink tea.	Nobody dared to question the captain's decision.
(4) used to (answer)	Used to + verb describes a habit or state in the past that is no longer true.	We used to walk to school when we lived in the village.