Поставить глагол to introduce во всех временах английского языка.

Simple Progressive Perfect Perfect

Progressive

Present

Past

Future

Present Simple - Introduce/Introduces

Present Progressive - am/is/are introducing

Present Perfect - have/has introduced

Present Perfect Progressive - have/has been introducing

Past Simple - introduced

Past Progressive - was/were introducing

Past Perfect - had introduced

Past Perfect Progressive - had been introducing

Future Simple - will introduce

Future Progressive - will be introducing

Future Perfect - will have introduced

Future Perfect Progressive - will have been introducing