After dinner the minister made a short _____ to the guests.

The owner of the jewelry store says a(n) _______ of $ 1,000 will be offered to anyone who can find the lost jewels.

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

In spite of the city’s crowded urban environment, opportunities for outdoor _______ are never lacking.

 If what you are teaching doesn’t _____ to your students, your students will gradually lose interest in it.