[ 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:
Grammar › ViewIt ___ a lot during the rainy season.
A. rain
B. rains
C. raining
D. rained
Vocabulary › View
To treat someone harshly because of that person’s beliefs or practices.
A. Persecute
B. Puritan
C. Separatist
D. Pilgrims
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
