Present perfect simple versus continuous

I'm hungry. I haven't eaten anything __________ breakfast.

Andrew and Tina have been going out together __________ Valentine's Day.

Rachel has been saving money to buy her apartment __________ many years.

It is so __________ to dedicate time to a job and not get any recognition.

It is used to express an action that is still going on or that stopped recently but has an influence on the present.

Scientists have been trying to find the cure for cancer __________ over a century.

Mary has known her best friend Kate __________ 10 years.

Telemedicine has become popular __________ the pandemic started.

I've been living in London for 10 years.

My boss gives me so many recommendations before a presentation! How

I'm reading about these teenage entrepreneurs who have made a lot of money at such an early age. It is really

The structure is have/has + past participle.

I have lived in this neighborhood __________ March.

The structure is have/has + been + gerund.

We've been to London recently.

It usually emphasizes duration, or the amount of time that an action has been taking place.