Are you familiar(熟悉) with the music?— Yes. There was ______ time _____ this kind of music was quite popular. [ ]

Look at the sun. _____fine weather it is! Let’s go hiking.

Not until then ________ how important the brakes were.

He is so _________ when he hears the __________news.

Is this ________ computer game —-Yes, it is _______ computer game.