Some people won’t realize the importance of their health _____they have lost it.
—_____ she have breakfast this morning? —No. She left home _____ breakfast.
Xi’an is one of ______ capital ______ in China.
If we keep planting trees, our country will become ______.
— do your parents go to the movies? —Once a month.
Only ten boys in our class use the Internet to get information, ______ use it to play games.