[ Preposition ]
A large number of inventions and discoveries have been made________accident.
A. in
B. by
C. at
D. on
Select your answer:

Random Topics:
Simple Present Tense/be/Present ProgessiveAdverb of MannersPresent Perfect Simple & ContinuousPast Simple TenseModal VerbTenses, Tag Questions, Phrasal VerbsAdverbs or AdjectivesNoun ClauseModals and Preposition-ed and -ing AdjectivesOther quiz:
Prepositions › ViewShe writes ___ her travels in a journal.
A. about
B. to
C. in
D. for
E. with
Grammar › View
I’m slowly … this new exercise routine.
A. used to
B. being used to
C. getting used to
