[ 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.

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Tenses and OpinionsPresent Simple Positive and NegativeNarrative, Past TensesVOCAB & GRAMMARPast Perfect and Past Perfect ContinuousPast Tense, Recount Text, and Future Tense1st and 2nd ConditionalsFor vs SincePresent Perfect and Past SimpleNouns, Articles, DeterminersOther quiz:
Conjunctive Adverbs › ViewWhich of the following conjunctive adverbs shows time relationships?
A. Anyhow
B. Conversely
C. Next
D. However
Gerunds and Infinitives › View
The security admits ___________ the burglar to enter the house.
A. to have allowed
B. to allow
C. to allowing
D. allowing