When I came across this sentence, “What did you think of Bombyx Mori?”, in the Silkworm, I re-read CGEL’s page 909, which was led by @snailboat’s comment@snailboat’s comment. Then, I thought out this construction: I think <something> of Bombyx Mori. But I can’t find out any of this structure in dictionaries. Isn’t this structure used in declaratives?