—What are your parents?—My father is a teacher, and my mother is______.
In the environment area, there is a system ________ the waste is disposed of by using the principles of ecology.
After the recovery from her illness, my mother began to writing something as a way to kill her time.
The UK, ____Great Britain and Northern Ireland, is a country famous for its long history.
The U.N. announced, “China so far _________$6 million to the World Food Program to help ease food shortages in the three African countries worst affected by the Ebola virus.”
-- -You should have thanked her before you left.-- - I meant ________, but when I was leaving I couldn’t find her anywhere.