[ Grammar ]
Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse _______.
A. causes
B. effect
C. gas
D. damage
Select your answer:
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Adverbs and PhrasesWho am I?Verbs and PrepositionsSimiles and Body IdiomsCountable & Uncountable NounsSo, Such, Many, MuchConjunctions in Complex SentencesSimple Present Tense/be/Present ProgessivePresent Simple: affirmative, negative, interrogativeSimple Past - Irregular VerbsOther quiz:
Present Simple › ViewShe ____ usually late for work.
A. are
B. is
C. does
D. isn’t
Tenses › View
I _____ (buy) some books this morning.
A. buying
B. buyed
C. bought
D. brought