Leia os dois parágrafos a seguir para responder à questão.
An international student who majors in engineering
drops by the engineering department office and asks the
secretary, “Can you tell me where the English department is?”
The secretary smiles and responds, “I don’t know, actually.
It’s probably somewhere in the Humanities Building. Do you
have a campus map?” The student turns around and leaves.
The secretary is taken aback and feels slightly uncomfortable.
She wonders why the student left so abruptly.
(...)
People who interact with ESL students have commented
that some seem to express gratitude excessively for small
considerations, even to the point of embarrassing the person
they are speaking. Others seem downright rude because they
do not say thank you when they are expected to.
(Celce-Murcia, M. 2001.)
The expression “drop by” belongs to a category called
phrasal verbs (verb + particle). Sometimes verb and
particle can be separated, sometimes they cannot. Choose
the alternative that displays a separable phrasal verb.