—You don’t see the professor from Singapore quite often, do you? —No, we only meet ______.
Today some people call Amsterdam the “City of Bicycles”____ the convenience for bicycles there.
Not long after his return, a local war ____ near his town.
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?