Bonjour j'ai besoin d'aide

Reformulez les paires de phrases suivantes pour proposer une seule phrase au present perfect.

Tania went to New York City to work as a make up artist seven years ago. She still works there.
→ Tania has worked as a make up artist in New York City for seven years.

a. Ginny wants to become a neurosurgeon. She already wanted to become a surgeon when she was 6.

b. My boss arrived at 7 a.m. this morning. It's 5 p.m. and he's still at work.

c. Last year, I started working as a nurse at the hospital. I still work there.​