I’m told that you are going to Canada to have a threemonth further study. Don’t let such a good chance to improve your English ________ through your fingers. [ ]

The doctors have done ______ they could ______the child

escribed his father, who ________ a brave boy many years ago, as a strong-willed man.

The new law states that people _ drive after drinking alcohol.

Hearing the ______ news, all the students looked ______ at their headmaster. [ ]