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

Random Topics:
Can/CouldContrastive ConjunctionModals and InversionPast Simple TensesGrammar: is/are/was/werePRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTShould and Shouldn'tPast Tense vs Future TenseLanguage Features: Reflective ArticleGrammar - SimilesOther quiz:
Idioms › ViewIf there is an earthquake, you should make ___ the park.
a. out
b. up
c. for
Grammar › View
The bicycle is slower / slowest than the motorcycle.
A. slower
B. slowest
Grammar › ViewThe documentary Rize explores the origins and evolution of Krumping and Clowning, two dance forms that would have emerged from South Los Angeles.
A. NO CHANGE
B. emerged
C. will emerge
D. is emerging
Present Continuous Tense › View
He ………………………………..eating.
A. Am not
B. Is not
C. Are not
D. Be not
