[ Modals and Responsibilities ]
You ___ take breaks while studying.
A. must
B. need to
C. ought to
D. responsible for

Random Topics:
Past and Future TensesCan vs CouldTypes of PrepositionDegrees of ComparisonVerb & GrammarConditionals and Modals of ProbabilityPresent Perfect and Past SimpleAdverbs, Infinitives, Definite ArticleConjunctive AdverbVocabulary Spelling GrammarOther quiz:
Grammar › ViewShe needs to take ………….. time off work to visit her grandparents.
A. some
B. a
C. any
D. an
Vocabulary and Grammar › View
Choose the correct past perfect form: She ________ already ________ when he called.
A. had, left
B. has, left
C. had, leave
D. have, left
Grammar › ViewWhat is the verb in this sentence:
The ship sailed out into the ocean.
A. sailed
B. ship
C. ocean
D. out into
Vocabulary › View
the variety of life in the world or in a particular habitat or ecosystem
A. carbon dioxide
B. boreal
C. ecosystem
D. biodiversity
