The boy __________ his friends was playing in the street when the earthquake happened.[ ]

.. The online exposure of the diary of a government official made the public realize the extent ______ the Internet affects the society.

is he?–He is PSY. He sang the song Gangnam Style (《江南Style》).

I don’t know whether he will come this morning. If he ____, I ____you— Thank you very much.

Excuse me , Sir . But smoking is not allowed here. —Sorry, I didn’t see the sign. I’ll ___________________ my cigarette at once.