______ is often the case is that Tom doesn’t study hard and fails in passing an exam.
you should go on trip to Italy with us because you won’t get second chance.
This is the hotel ________ last month.
What________ the public was that Phelps should take drugs.
The Red Army soldiers had to fight________ all kinds of difficulties in their fight________ the people’s freedom.
Some people fear that ________ air pollution may bring about changes in ________ weather around the world.