[ Causative Verb ]
Epilepsy —- to be caused by poor air, which —- to be carried by the veins to the brain.
A. Is believed / thought
B. Believes / is thought
C. Was believed / was thought
D. Is believing / is thinking

Random Topics:
Conjunctions, Interjections and DeterminersPreposition and AdjectiveSentencesClauses and GerundsTenses and ArticlePronounsPrepositions of Place & TimePerfect Progressive TensesMay, MightComparative AdverbOther quiz:
Articles › ViewWhy didn’t you keep it in … secret?
A. the
B. an
C. a
D. –
Grammar › View
In questions, the subject is the person, place, thing, or idea that is being asked about. What is the subject of the question? Who is the president of the United States?
A. The president of the United States
B. Who
C. The United States
D. Is
Modal Verbs › ViewYou …………………… buy a bus ticket – I’ll buy one for you.
A. don’t have to
B. mustn’t
C. should
D. need
Gerund & Infinitive › View
My uncle claims…………… (be) the owner of the case.
A. to be
B. being
