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Present TenseCoordinating & Subordinating ConjunctionsRelative Clauses and Past PerfectPassive Voice and ModalsVerbs + Gerund or InfinitiveGrammar SuffixesSentence StructureGrammar - too & enoughSpeculation with Modal VerbsTOEFL GrammarOther quiz:
TOEFL Grammar › ViewThe quality of the essays _____ significantly among applicants.
A. vary
B. varying
C. varies
D. is varying
Habitual and Continuous Tenses › View
We often … that.
A. are buying
B. buys
C. buying
D. buy