_______ the beginning of 1999, the popularity of MP3 has increased greatly.[ ]

Sofia looked around at all the faces: she had the impression that she _____ most of the guests before.

We planted all kinds of fruits on the hill, ______ beaches, pears, apples and so on

David was very unhappy for ____ to the party which was held in his cousin’s house.

Don’t touch your eyes, nose and mouth, because they aren’t covered by skin and can _______ the virus more easily.