You can’t predict everything. Often things don’t _____ as you expect.
The country’s population small, and most of its population in the mountainous areas.
Contemporary English is quite different from Old English. There has never been a year____ the language was not changing.
To help a friend solve the problem troubling him, .
Not until all the fish died in the river how specious the pollution was.
a reward of $1,000 will be given to can provide any clues to the case which has been investigated by the police for nearly half a year.