They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.
In face of _______ failure, it is the most important to keep up ________ good state of mind.
Most of the factories under___________ have been designed by Chinese engineers.
____________he came from the countryside, he became a modern architect.
They wanted the house at the foot of the mountain ______in a way to look pretty
The editor's job is to keep the newspaper______ and _____ to the readers.