The accident was my fault, so I had to pay for the damage ________ the other car.
The students ________ busily when Miss Brown went to get a book she ______ in the office.
By _____, water can be changed into gas.
Mr. Green is said _____ an experiment to prove the new method of solving the problem when young.
You will see this product made in this factory _____ wherever you go.
_____ the big snake, the little girl stood under the tree _____ to death.