1 I have already finished my homework.

2 Mai and her mother hasn't returned from the market yet.

3 How long have you been working in this company ?

4 We have never visited the Eiffel Tower before.

5 Huy has lived in Yen Lac town since the day he was born.

1. I / already / finish / homework

⇒ I have already finished my homework.

2. Mai / her mother / not / return / market / yet

⇒ Mai and her mother haven't returned from the market yet.

3. How long / be / work / this company

⇒ How long have you been working for this company.

4. We / never / visit / Eiffel Tower/ before

⇒ We have never visited the Eiffel Tower before.

5. Huy / live / Yen Lac Town / since / he / born

⇒ Huy has lived in Yen Lac Town since the day he was born.