[ Grammar ]
It is _____ proven that electrons have a negative charge.
A. scientifically
B. scientific
C. scientist
D. science

Random Topics:
Countable QuantifiersAbstract NounsPresent Continuos TenseGrammar - to be, possessive, have gotGerund and InfinitiveWh- Questions Present Simple TenseAll, Both, Neither, None, EitherPast simple - Irregular VerbsPrepositions Of PlaceTenses StructureOther quiz:
Must or Mus not › ViewWe ______ arrive at school on time.
A. must
B. mustn’t
Present Tenses › View
I usually _____ jeans.
A. wearing
B. wear
C. have been wearing
D. wears
Gerund Noun › ViewWe heard a baby………. in a neighbouring village.
A. cry
B. to cry
C. cried
D. to crying
Passive Voice & Tenses › View
She showed her ticket to the airline agent.
A. Her tickets were showed to the airline agent by her
B. Her ticket showed to the airline agent by her
C. Her ticket was showed to the airline agent
D. Her ticket wasn’t showed to the airline agent
