With Halloween approaching, there exists a real concern among parents and teachers __________ trick or treating will become a seriously anti-social activity.
Although the old man is in his sixties, ___ he walks fairly fast.
Rose is not only clever ____.
The Frenchman speaks ______.
This word can be used both as a noun ___ as a verb.
Mr. Chen, ____ his lady, has a good command of the English language.