Topics: Modals for Advice, Obligation/Prohibition, Necessity and Lack of Necessity
In which sentence can’t you substitute must with have to?
A. You must register online before you can make a purchase.
B. I haven’t seen my grandma since Christmas. I must see her soon.
C. You must answer all the questions on the test.
D. Claire must wear glasses for driving.
Select your answer:

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My father ____________ at 70 km/h when a policeman stopped him
A. was driving
B. drove
C. drived
