The book-store _____ open until 8 at night every day.

Don't be joking. It's time to____________ your business. 

With science and technology advancing, plentiful kinds of medicines are being developed to _____ us of our pain caused by diseaese.

After he retired from office, Rogers       painting for a while, but soon lost interest.

The computer system _______suddenly while he was searching for information on the Internet.