If nothing __________,the oceans will turn into fish deserts.
He is said ________ college in America, studying music.
In 2012 Mo Yan won the Nobel Prize for Literature, ________ a host of imitators.
He is afraid to face the difficulty he thinks he'll have ________ the driving test tomorrow; he finds it difficult ________ rid of the worries.
The Diaoyu islands have been part of China's territory since ancient times, ________ as important fishing grounds of Taiwan.
In order to jump, your body changes the chemical energy ________ in the food you have eaten into mechanical energy.