[ Tenses ]
The brain (___) complex processes when concentrating deeply.
A. is performing
B. performs
C. performed
D. has performed
Select your answer:
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Auxiliary Verbs (be, do, have)Grammar - Countable/ UncountablePronouns and AdverbsDirect Object and Indirect Objectused to vs be used to vs get used toGrammar : can, could and be able toVocabularyAdverb & Compound SentencesVerb 3 formsBe used to vs used toOther quiz:
Grammar › Viewto ask for something, usually in writing
A. hear
B. apply
C. attend
D. manage
Present Simple › View
My uncles _______ to work every day
A. drive
B. drives