These curtains are so dirty. They must ____ .
A. be cleaned
Zero ConditionalQuestion TagsSimple Past TenseGrammar - Nouns, Verbs, and AdjectivesHas Got & Have GotFamily Members and Present SimpleSuperlative AdjectivesReported Speech and Reported QuestionsZero & First Contidional
Other quiz: Mixed General Quiz
Decomposition is the process of enzymes digesting food. Another name for this process is ______________.
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