[ Past Tense ]
How ….. the accident …….?
A. did – happened
B. did – happen
C. was – happen
D. was – happening

Random Topics:
Preposition of PlaceQuantifiers and ArticlesPresent Perfect SimpleGrammar and StructureComparative and Superlative AdverbsPresent and Past TensesAdjective / Noun + to Infinitiveso vs suchQuantifies and Modals of DeductionGrammar: is/are/was/wereOther quiz:
Modals › ViewWhen he was young, he ________ swim very well. He won medals and championships!
A. had to
B. can
C. could
D. has
Present Tense › View
I work in a large office with about thirty other people, most of whom ___ (know) quite well.
A. know
B. knowing
C. is knowing
D. have known
