Make the present perfect continuous. Use contractions when possible.

How long (you / work) here?

How long (he / wait)?

(you / study)?

How long have (we / drive)?

How long (it / rain)?

(you / eat) crackers?

(you / go) to the gym again?

How long (you / jog) along this river?

(they / try) hard?

(you / cook)?

How long (children / watch) TV?

How (you / look) for your earrings?

How long (you / visit) to this part of the country?

How long (she / live) in Warsaw?

(you / search) for a new house?

(she / manage) the staff well?

(you / think) about your career?

(they / have) a good time?

How long (we / discuss) at this problem?

(she / travel) by bus?