Rewrite the following general statements using singular nouns. Make sure that the verbs agree with their subjects. For example:
Frogs are amphibians.
A frog is an amphibian.
Wrenches are tools.
A wrench is a tool.
1. Pines are evergreens.
2. Otters are mammals.
3. Computers are machines.
4. Crabs are crustaceans.
5. Crickets are insects.
6. Oaks are hardwoods.