—I think students can get their ears pierced. —I’m _______ against you. They’re so young.
Tom and Paul usually watch TV ______ weekends.
Every day the old man takes these children home _____ school.
Could you come to my office ________ the day after tomorrow.
We had built three bridges over the river _______ the end of 1994.
Life will be better _____ the 21st century.