- It is not ---_______ for me to return all the books to the library now because I still need some of them for my research.
- This morning in the class, our teacher lost his ______at last because he could not stand any more.
- Several loudspeakers are _______ from the ceiling and we can hear the speaker very clearly.
- Without a proper education, people could _______ all kinds of crimes.
- I have not heard anything from him since his _______.
- Both sugar and salt can ______in water.
- Students with _______ problems may apply for student loans.
- Sometimes it is very difficult to _______ some of the English words. Even the native speaker can not help.
- Carelessness made him fall in his job _______.
- Some states in the United States _______ people tocarry guns.
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