Niagara Fall is a great tourist _______ , drawing millions of visitors every year.

In public places, we can often see ______ that tell us useful things, such as no parking, no smoking, etc.

 “Can I take your        now?”said the waiter.

I bought a dress for only 20 dollars in a sale; it was really a good ______.

The first performance of the musical play “The Sound of Music” aroused ____in audience.