257.Not until I checked out the site ……… that the G20 Summit this year will take place in St Petersburg and will be hosted by Vladimir Putin.
a. have I realized; b. did I realize; c. was I realizing; d. had I realized.
I marked (b), is it correct? If so, why?
Yes, it's correct. The appropriate uninverted form here would be simply "I realized", not "I have realized", "I was realizing" or "I had realized". Therefore the inverted form is "did I realize".
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Yes, it's correct. The appropriate uninverted form here would be simply "I realized", not "I have realized", "I was realizing" or "I had realized". Therefore the inverted form is "did I realize".