Ozone depletion has been_________at the poles, especially over Antarctica, where a seasonal ozone layer “hole” appears.
A. as much severe as
B. so many severe as
C. far more severe than
D. by far the most severe

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Past Simple TensesSimple Past Irregular & NegativeTenses of Verbs - UsageDefinite pronouns (Subject, Object, Reflexive)Question TagFuture Continuous, Future Perfect and Future Perfect ContinuousComparatives - SuperlativesModals of Obligation & ProhibitionIf ConditionalsInversions and SubjunctiveOther quiz:
Subject-Verb Agreement › ViewEither the bus driver or the motorcycle rider responsible for the accident.
A. Is
B. Are
C. Am
D. Be
Vocabulary › View
Liaison
A. Connection between the units of any organization
B. High rank
C. Super-patriot
D. Lower class
E. Middle class
Which of the following is correct?
A. This, Brunhilda, is not your best effort.
B. This Brunhilda, is not your best effort.
C. This Brunhilda is not your best, effort.
D. This, Brunhilda is not your best effort.
Modals of Prediction › View
I am a vegetarian. I __________ eat that steak.
A. may not
B. definitely won’t
C. probably won’t
