To make a call for a job inquiry, you should remember to speak in a friendly, _________________ tone.
                    举一反三
- 中国大学MOOC: To make a call for a job inquiry, you should remember to speak in a friendly, _________________ tone.
 - If you want to make complaints, which number should you call?
 - How does the piano sound? A: To make a tone. B: To make a tone with one's hand C: To strike the strings with a hammer D: To make a tone with the bow
 - To avoid disturbance, you should not make a second call before the appointment.
 - What should you make more efforts on if you want to speak English as a native speaker?
 
