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

Random Topics:
InfinitivesPast Perfect Tense and Past TenseModal Verbs and PermissionArticlesArticles & PrepositionComparison & Modal Verbs in Passive VoiceSpeech TensesGerund & ParticipleModal and Relative PhrasesFood VocabularyOther quiz:
Grammar › ViewIdentify whether the following sentence contains a comma splice: ‘The sun was shining, it was a beautiful day.’
A. Yes
B. No
C. Not sure
D. Maybe
Grammar › View
My birthday is __ Sunday so I can have a party.
A. in
B. on
C. at
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