My grandmother ____ sell bánh mì near the market.
- A. used to(correct answer)
- B. use to
- C. uses to
- D. was use to
Why: A past habit: used to, the same for every subject.
B114 questions · Intermediate · Modal Verbs and Related Expressions
Practise used to with short multiple-choice questions: used to for every subject, didn't use to, Did you use to…?, and when to choose the present simple or the past simple instead. Every answer has a short reason.

1.My grandmother ____ sell bánh mì near the market.
Why: A past habit: used to, the same for every subject.
2.____ you use to play the piano?
Why: Questions use did, then use to without -d.
3.I ____ get up early, but now I have to.
Why: A past state that changed. After didn't, the -d goes: use to.
Used to + base verb for past habits and states that have changed: didn't use to, Did you use to…?, any more, and when the past simple is the right choice.