_______environmental damage is done, it takes many years for the ecosystem to recover.
Talor is really stubborn. Whenever we have arguments, I am the one to______.
As is known to all, the newly learnt words will soon be forgotten unless_____ used in everyday communication.
—It is reported that a school bus fell into a river and 14 pupils were killed in Hunan Province the other day. —Yes,_____ news came as _____ shock to all of us.
To learn English well, we should find opportunities to hear English______ as much as we can.
So far nobody has claimed the money_______ in the library.