[ Modal Verb ]
People who use public parks __________ clean up after themselves.
A. must
B. may
C. ought
D. might

Random Topics:
Nouns and QuantifiersSubject/Verb Agreement with Collective NounsConditionals (0 - 1 - 2)Sentence and FragmentPresent Simple and Present ContinuousFuture Tense (will/be going to/p.continuous)Quantifies and Modals of DeductionPast Tense vs Future TenseQuantifiers: too many, too much & enoughComparative and Superlative AdverbsOther quiz:
Grammar › ViewGrandma says that it __________ tomorrow. She’s completely sure!
A. might snow
B. will snow
C. will snowing
Comparison › View
My cars is ____ than yours.
A. clean
B. cleaner
C. more clean
D. cleanner
Perfect Modals › ViewWhich perfect modal is used to express that something was possible but did not happen?
A. May have
B. Should have
C. Could have
D. Must have
Vocabulary › View
the act or process of moving upward; rise; climb
A. ascent
B. assent
