Last week I took a few days of work and visited my friends in Manchester.
I will use a stronger insecticide next week.
You are busier than me this week.
Since the action is in the PAST, you have to use "exited" which is the past tense of the verb.
Example sentence - I learn a new chord on the guitar every week.
I can take the monorail to work next week!
Ultimate warrior wrestled every week.
i got a migraine and it lasted for a week!
i sort my paper last week
i feel so weak today.
You can use the word shortage in the following sentence. There was a shortage of staff members at work this whole week.
They went cruising aroundthe islands for a week.
After a week attending a religious retreat, I felt regenerated.