[ Grammar ]
The atmosphere is getting more………because there is more smoke from factories and motor engines.
A. polllute
B. polluting
C. polluted
D. pollution

Random Topics:
Grammar - either...or, neither...norPassivisationRelative Pronouns and AdverbsPerfect TensesComparativesComparatives and Past Perfect TenseGerunds and InfinitivesGrammar & TensesModals of ObligationVerb + Infinitive or GerundOther quiz:
Grammar › ViewWe didn’t go into the Museum of Modern Art. The tickets were _______.
A. too expensive
B. enough expensive
C. expensive enough
D. more enough
Modals and Active and Passive Voice › View
. A _____is a type of auxiliary verb (helping verb) used to express permission, prohibition, and obligation,
A. Models
B. Moddals
C. Modals
D. Moodals
Tenses › ViewJogging is a very good exercise.
A. Present Simple Tense
B. Present Continuous Tense
C. Simple Past Tense
D. Past Continuous Tense
Vocabulary › View
Horrible; shocking
A. Ghastly
B. Petulance
C. Verandah
D. Accomplice
