[ 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:
Relative Clause › ViewDo you know anyone ________ drives a sports car?
A. which
B. that
C. whose
D. when
Grammar › View
I wish I had _____ luck.
A. their
B. theirs
She ______ (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
