Sorry to say it will be years _______ we really have classes here with only 25 students.
Certainly I posted your letter---I remember ____it.
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.