[ Grammar ]
Is this sentence complex or not complex? Before we can go to the dog park, the dog must be put on a leash.
A. complex
B. not complex

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Prepositions of TimePrepositions and Prepositional PhrasesFuture - be going toVocabulary and ModalsTOEIC GrammarModals and Present TensesSimple and Continuous Present TenseGrammar (want to/ need to/ have to)State Verbs and Action VerbsFuture - will / going to / present continuousOther quiz:
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If John … more careful, he wouldn’t get so many traffic fines.
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