だろう => Probably A N4
Sentence Endings
それはそうと => By the way N2
Miscellaneous
そうにない => N2
Potential, Possibility
そうだ => Seem, like… N4
Situations and Experiences
だろうと[思「おも」]う => I think probably A N4
Sentence Endings
は[疎「おろそ」]か => B, let alone A; B, not to mention A N1
(Not)only , (Not) even
に[沿「そ」]って/に[沿「そ」]い/に[沿「そ」]う/に[沿「そ」]った => Along with A; In line with A N2
Based, Focused, Depending on
に[相違「そうい」]ない => No doubt N2
Information, Report
であれ,であろうと => Even A, Both A and B N1
(Not)only , (Not) even
ところを/ところに/ところへ => At time/situation A N2
Information, Report
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
そういえば => Speaking of .., A by the way, A; N2
Considering, Concerning