I am sure ________ he said is true.
Now an increasing number of middle school students go abroad for further study at their own ________, trying hard to realize their dreams.
When somewhat better ________ academically, he returned home to continue his research.
This new teaching approach is specially ______ to develop children’s problem-solving skills.
The opening ceremony of Beijing 2008 Olympics is a great success, which is believed ________ the Chinese splendid civilization.
A good speaker is supposed to manage to ________ the listeners what he means.