Not until he retired from teaching three years ago having a holiday abroad.
Later, these rocks proved that ___ in the distant past the Antarctic was covered by plants.
The prisoners then wrote the stories in a book called “The Description of the World”, ____ became one of the best-selling books in Europe.
Could you help me to find out the reason ____ the brake doesn’t work?
Eric the Red was forced to leave because he had committed a murder, ____ he got into trouble.
I still remember the day___ I attended my first lecture in college.