Wash your hands with soap and water ___ after each contact with the sick person.
— Why do you look so worried?— My MacBook Pro broke down and my paper ______ unfinished since.
Two years ago, three scientists traveled to the Antarctica to explore a secret world hidden _________ the ice.
I felt surprised that anyone of his intelligence such an easy test.
I was feeling left out in the new school ________Alice, an easygoing girl from Canada, came to stay with me.
According to its website, each tattoo lasts around seven days, ________ it isn't scrubbed or picked at.