The car comes with a heater but the air conditioning is __________.
A: excessive
B: additional
C: optional
D: arbitrary
A: excessive
B: additional
C: optional
D: arbitrary
举一反三
- Can you ________ the air conditioning?
- A re-heater in an air conditioning system functions to ______.
- We don’t need air conditioning, ____?
- An _________ charge is made for heavy bags when you get aboard. A: over B: alone C: additional D: optional
- Heating and air conditioning are examplesof common costs of all departments in a retail store.