Select the most appropriate word to Fill in the blank.
Everything happened _____ quickly _____ I felt dazed.

Options

A. as, so
B. as, as
C. so, that
D. so, as

Explanation

so, that
RULE: So and ‘so that’ are used for cause and purpose. So that cannot be used in negative
In the given sentence, the first part (Everything happened quickly) is the cause of the second part.