[ Modal Verbs ]
Which modal verb is used to express obligation: Ought to or Have to?
A. Need to
B. Have to
C. Should
D. Can

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Present Perfect SimplePhrases and TensesPresent Tense (Negatives and Questions)Modals of Obligation & ProhibitionTenses: Present simple, Past Simple, Future SimpleLet & Be allowed toGiving and Asking for AbilityPast Continuous Tense & Past ModalsPrepositions of MovementTenses and VerbsOther quiz:
Perfect Tenses › ViewBy tomorrow morning, he ____________________ wonderfully.
A. will have slept
B. will sleep
C. had slept
D. was sleeping
Vocabulary › View
I used a lens to examine the _ of the rock.
A. earth
B. wonder
C. properties
D. active