—The lights in the classroom are still on. Do you know______. —To revise for the coming exams.
This piano is too big. Can you make ________ for it?
The number of the students in our school always growing.
Leaves fall _______piles ________the ground
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
Wolves often work __________a team and they never kill for __________.