Do you know that the first textbooks written for teaching English as a foreign language ____ in the 16th century?
The villagers went out to the mountain __________ the missing child.
The room _______ very useful when we had visitors.
I doubt _______ he will win or not.
-----I’m afraid I’ve broken your chair. -----.I can easily get it fixed .
It was not until dark ______ he found that it was the correct way to solve the problem.