Job Experiences - Present Perfect and Simple Past Tense

I ____ (attend) three conferences this year.

• attended

• have attended

• attends

I ____ (meet) with the client yesterday to discuss the project.

• have met

• met

• meet

He ____ (lead) a successful marketing campaign last year.

• has led

• leads

• led

They ____ (launch) a new product line recently.

• launched

• have launched

• launches

We ____ (implement) a new system last quarter.

• implemented

• have implemented

• implements

They ____ (not/finish) the report yet.

• didn't finish

• haven't finished

• don't finish

She ____ (complete) her certification in project management last month.

• has completed

• completed

• completes

She ____ (receive) an award for her excellent performance last month.

• has received

• received

• receives

She ____ (not/work) in customer service before.

• hasn't worked

• didn't work

• doesn't work

I ____ (work) at ABC Company for five years before moving to my current job.

• worked

• work

• have worked