Is this factory near the village ______ they visited last year?
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.
_____ as the most excellent student in her university, as most classmates had expected, made her parents very happy.