I decided to drop in at the bookstore on my way home.

I decided to drop in on my friend unexpectedly.

In the meantime, I will finish my work.

in the presence of other people

These products are in high demand.

He made a decision in an instant.

I am in contact with my friend every day.

In general, people prefer to eat healthy food.

I feel nervous speaking in public.

She was absorbed in reading a book.