[ Tenses ]
Over the past fifty years, global oil comsumption and CO2 levels —- proportionally.
A. are increasing
B. will have been increasing
C. have been increasing
D. had been increasing
E. were increasing

Random Topics:
Present and Past Simple TenseNouns - Word Form-IONCompound and Complex SentencesGrammar: Have toWestern Europe CountriesSubordinate ConjunctionsThird Grade ExamArticles A and AnHow much or How many?Contrastive ConjunctionsOther quiz:
Present, Past and Future Tense › ViewRoberta : Could you pay attention for a moment , please ?
Winda : …
Roberta : We have to submit this work right now.
A. I don ‘t want to know
B. I’m busy
C. Of course
D. I’m sorry
Gerund Subject or Object › View
Running every morning keeps me energized.
A. Subject
B. Object
Grammar › ViewKen did so ___ on the math test.
A. bad
B. badly
C. badder
Grammar › View
True or False:
Appositives tell more about the nouns they follow.
A. TRUE
B. FALSE
