We know a good deal about the people who lived in China 4, 000 years ago, because they ______write and leave written records for those who lived after them.
Some pre-school children go to a day care center, __________ they learn simple games and songs.
---Have you heard the latest news? ---No, What ________?
John was dismissed last week because of his ______ attitude towards his job.
My morning ______ includes jogging in the park and reading newspapers over breakfast.
Since Tom ______ downloaded a virus into his computer, he can not open the file now.