Present Perfect Continuous

I have been _____________ this game _______ my __________.

__________ kids ________ been dancing _______ years.

_______ have _________ working on this project for more ________ three years.

Science has been ________ antibodies to _________ diseases for a _______ time now.

The Queen is _____ the only one who ______ been watching ______ closely.

Jeff ______ been ________ H.I.V. _______ 25 years.

She has _______ thinking about __________ how to _________ perfumes.

________ long ______ you been _________, John?

I _______ been _________ this _________ for 10 years.

______ have been feeling _____ ____________.