As is recorded in history, silkworms were first raised in ____we now know as Hebei Province.
____ news came _____ an unknown disease was spreading in the area.
They have no idea at all ______.
Even though the Smiths have moved to a faraway place, we still see them ___.
He was ______ to find that it was almost impossible to undertake the task.
I took a risk to carry out the project, but it ____ in the end.