That was an __________ performance — I’ve never seen anything like it!
extraordinary
This museum has a great __________ of animal skeletons.
variety
There are a lot of frogs and ducks swimming in _________.
pond
There is a deep __________ in the middle of the desert.
canyon
Please __________ your head from the sun by wearing a hat.
protect
The explorers went on an __________ to the South Pole.
expedition