Present Perfect Simple & Continous (Tech & Innovation)

Scientists __________ a new battery that lasts 10 times longer.

• have developed

• have been developing

• developed

Engineers __________ ways to improve electric vehicles for several years.

• have improved

• have been developing

• have developed

That start-up __________ a lot of attention since it launched.

• has attracted

• has been attracting

• attracted

Many tech companies __________ AI to optimize customer service.

• has been using

• have used

• have using

I __________ this 3D printer all morning. It's finally working.

• have fixed

• have been fixing

• fixed

She __________ her phone four times this year.

• has been changing

• has changed

• changed

We __________ for a more eco-friendly packaging solution.

• have looked

• have been looking

• have looking

The company __________ a major breakthrough in solar panel technology.

• have made

• has made

• have been making

I __________ this new app for a few weeks, and it's amazing.

• have used

• have been using

• used

They __________ a new cybersecurity system recently.

• have launched

• have been launching

• launched