[ Grammar ]
You ———- clean the windows regularly.
A. must
B. mustn’t
Select your answer:

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InfinitivePresent Progressive TenseGrammar: so and suchFirst Conditional, Future Time ClausesPresent TensesQuestion WordsPerfect TensesSubject and Verbs AgreementMust / must notIndefinite and Definite ArticlesOther quiz:
Vocabulary › ViewPublic areas and buildings are now more ______ to people with disabilities.
A. accessible
B. bothersome
C. primitive
Vocabulary › View
To forbid; to prohibit
A. Proscribe
B. Scripture
C. Subscript
