prepositions revision (Outcomes Int U5)

I work ... the sales department

I'm the rep ... the whole of the central region

I'm responsible ... all the salaries and bonuses

I've been working .... Apple since 2010

I work ... a sales assistant in Penny's

I've been working .... the new version of the app for so long that I need a break

She's in charge .... the whole department.

I work .... children most of the time

I normally work .... computers, but this week I'm in the field

The deadline .... the work is Friday.