[ Grammar ]
If people used cars less, the air ____ much cleaner. (to be)
A. would be
B. would have been
C. will be
D. was

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InfinitivesPast Perfect Tense and Past TenseModal Verbs and PermissionArticlesArticles & PrepositionComparison & Modal Verbs in Passive VoiceSpeech TensesGerund & ParticipleModal and Relative PhrasesFood VocabularyOther quiz:
Grammar › ViewExposure to __________ can cause serious health issues.
A. antimony
B. coordinator
C. additive
Tenses › View
I (see) a doctor tomorrow, this headache is unbearable!
A. am seeing
B. see