... おぼえはない => don't remember... N3
Position, perspective
~のぼる  => To increase N2
Reach level
~はおろか      => let alone; not to mention; needless to say ~ N1
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
お => Prefix N5
Respectful, humble
頃 (ころ/ごろ) => around; about; when N4
...どおし => Throughout N3
Continuous
... だろうが、... だろうが => Whether it's ... or ... N3
Demonstrate by example
ところを/ところに/ところへ => Right on time/At the right time N2
とおり => Several ways N4
Means and methods
おくに => Which country N5
Doubt