Teaching is a difficult job ______ requires great skill and patience.
It was at the entrance ______ we stood chatting ______ the accident happened.
For a long time they walked without saying ______ word. Jim was the first to break _____ silence.
---Are my clothes too casual? ---No.You can go______you are.
More and more people shop online, ______advantage of low prices.
The Day of the Dead, an ancient Mexican festival, is not a sad day, but______time to celebrate______cycle of life.