I don’t think she noticed the headmaster just at that moment, for she _______ the game on her cellphone.

Jack doesn’t smoke now, but he ______ for almost twenty years.

It was required that the tall building _______ at present because it is still new. 

Great changes __________ in this city over the past five years.

— Have you heard about the recent election?— Sure, it ________ the only thing on the news for the last three days.