Excuse me! You can’t take photos here．Look at the sign. It says “NO PHOTOS”．— Sorry，I _________ see it and I _______ do it.

______, the party which the old professor attended last Saturday was pleasant

I don’t know _______.Can you tell me________

He wasin the accident.[ ]

Baoji isn’t ____ she used to be. Great changes have taken place in the past years.