3- Choose the correct answer :
1- I haven’t finished my project ( ever – so far – yet – once ).
2- Have you (ever – so far – already – yet ) flown in a helicopter.
3- How (long -often -many -much) have you worked at the hotel? – For 5 months.
4- He ( has – have – had – having) lived in China all his life .
5- They have (visit – visits – visited – visiting) many places in Egypt .
6- We have worked on this project ( since – for – yet – ever ) three months