[ Abstract Noun x Concrete Noun ]
Have you ever heard the history of vaccines?
- abstract noun
- concrete noun

Random Topics:
Comparative Adjectives and AdverbsPast Perfect TensePrepositions of Location, Movement and TimeIf- ConditionalMust or Mus notActive & Passive VoiceAdjectives & PrepositionsTenses of VerbsTime Clauses of FutureVerb Tenses and UsageOther quiz:
Sentences and Non Sentences › Viewthat little girl
A. sentence
B. non-sentence
Grammar › View
We decided to climb the tall tree.
A. declarative
B. interrogative
C. exclamatory
D. imperative
School rules:
Students … run in the classrooms.
A. can’t
B. must
C. mustn’t
D. should
Prepositions of Time › View
Our family enjoys spending time together __ the evening.
A. in
B. on
C. at
D. of
