[ Modal Verbs ]
You … be quiet when you’re in the library.
A. must
B. mustn’t
C. should
D. shouldn’t

Random Topics:
Have to/Has toPrepositions of Place and TimeSimple Present Tense vs Present Continuous TenseTime Clauses of FutureAcademic VocabularyFuture SimpleModals and Past ModalsPerfect Tenses and VocabularyAsking & Giving OpinionZero ConditionalOther quiz:
Article › ViewShe adopted ___ cat from the shelter yesterday.
A. the
B. an
C. a
D. Ø (no article)
Vocabulary › View
An awareness of one’s own personality and individuality
A. action step
B. leadership
C. self- awareness
D. self-reflection
Grammar › ViewWhere … you last night?
A. were
B. was
C. have
D. has
Grammar › View
The present ______ is on the table is beautiful.
A. who
B. whom
C. whose
D. which
E. when