[ Modal Verbs ]
It expresses obligation.
A. Can
B. Should
C. Must
D. May

Random Topics:
Conditional Sentence 0, 1Present Perfect: for/sinceAdverb PhrasesModal "Have to"Present Simple/AffirmativeGerunds/InfinitivesRelative Clauses and Past PerfectGrammar (Adjectives)Conditional TypesPresent Perfect Simple and ContinuousOther quiz:
Tenses › ViewShe ______ (enjoy) cooking Italian food every weekend.
A. enjoys
B. is enjoying
C. enjoyed
D. will enjoy
Verbs and Adverbs › View
This is the teacher who also _________ my father, when he was young.
A. taught
B. teach
C. thought
D. teaches