How long do you think ______ the computercompany brings out a new product

Can you lend me the book Gone with the Wind? — Sorry, I returned it to the library just now. Maybe it is still ____.

_____ at his knowledge, all thestudents showed their respect for their teacher.

The news _____the president was killed soon spread over the country

ing on a frozen sports field soundslike a lot of fun. Isn’t it rather risky, __9