[ Modals and Responsibilities ]
They are ___ ensuring the safety of the students.
A. must
B. need to
C. have to
D. responsible for

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Grammar - Wh QuestionsModal Verbs of ObligationGrammar (either..or.. and neither..nor..)Gerunds & Infinitives + VocabularyHelpful Phrases Modal Verbs - ObligationWH Questions and Simple Past TenseWill vs Verb InfinitivesPast Perfect and Past Perfect ContinuousSubject Verb Agreement Irregular VerbOther quiz:
Grammar › View_______ she come to work yesterday?
A. do
B. did
C. done
Grammar › View
Sam ____________ Italian before he moved to Rome.
A. studied
B. was studying
C. study
D. had studied
Punctuation and Grammar › View. Where should the comma go in this sentence? “Before eating Sara washed her hands.”
A. After “Before”
B. After “eating”
C. After “Sara”
D. No comma is needed
Grammar › View
Does she __________dolls?
A. have
B. has
C. do
D. none
