Fill in the blanks using the following expressions.
1. enlighten
2. deferred
3. fumes
4. stuck
5. spoil

1. Exhaust _____ are bad for your health.
2. She didn't _____ him about her background.
3. Foolish parents _____ their children.
4. They were _____ in a line of traffic.
5. The department _____ the decision for six months.

Answer key
1. fumes
2. enlighten
3. spoil
4. stuck
5. deferred