The education of ______ young is always ______ hot and serious topic.
---Have you read the timetable ? ---Yes . The train ____ at 10:12 p.m..
Do you know __________ ?
The message is very important, so it is supposed _______ as soon as possible.
Visiting _______ Great Wall is ________ unforgettable experience to me.
---- Do you surf the Internet a lot? ---- Well,_______, I’m too busy with work to surf the Net.