English » Fill in the blanks
Select the most appropriate option to fill in the blank.
So dangerous did the weather conditions ______ that all mountain roads were closed.
become
became
becomes
have become
option A become is the most appropriate word to fill this blank here
the structure is of inversion, when a sentence starts with an adverb we use inversion
for past tense the structure is; adverb--did--subject---v1.
so according to the ruls first form of the word become should be used here