______ was most shocking about the tornadoes in America was that they threatened six states and killed more than 100 persons.
All the people in the nation can remember exactly how many years ago _______ the civil war broke out.
_______ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.
The earthquake in Yushu, Qinghai Province damaged many houses and business buildings; _______, it caused more than 1,000 deaths.
Catherine bought a postcard of the place she was visiting, addressed _______ to _______ and then posted it at the nearby post office.
. New policies, _______ to insure that compulsory education is truly free, ________ by the local government across China since the start of school on September 1.